51
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Optimization of ultrasound-assisted parthenolide extraction from Tarchonanthus camphoratus leaves using response surface methodology: HPTLC and cytotoxicity analysis. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103194] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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52
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Extraction optimization of antifungal compounds from Thalictrum foliolosum DC. roots. SOUTH AFRICAN JOURNAL OF BOTANY 2021. [DOI: 10.1016/j.sajb.2021.01.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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53
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Jaimez-Ordaz J, Contreras-López E, Hernández-Sánchez T, González-Olivares LG, Añorve-Morga J, Ramírez-Godínez J. Comparative Evaluation of Four Extraction Methods of Antioxidant Compounds from Decatropis bicolor in Aqueous Medium Applying Response Surface Design. Molecules 2021; 26:molecules26041042. [PMID: 33671156 PMCID: PMC7922995 DOI: 10.3390/molecules26041042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 02/12/2021] [Accepted: 02/13/2021] [Indexed: 12/14/2022] Open
Abstract
The objective of this paper is to compare conventional, ultrasound, microwave, and French press methods for the extraction of antioxidant compounds from Decatropis bicolor in an aqueous medium. This plant is widely used in Mexican traditional medicine for breast cancer treatment. Despite that, there are few studies on D. bicolor. Two response surface designs were applied to establish the best conditions of the liberation of antioxidants from D. bicolor, which were determined by DPPH• and Ferric Reducing Antioxidant Power (FRAP) techniques. The total phenolic content was evaluated by the Folin-Ciocalteu method. The results showed that D. bicolor is a source of antioxidants (669–2128 mg ET/100 g and 553–1920 mg EFe2+/100 g, respectively) and phenolic compounds (2232–9929 mg EGA/100 g). Among the physical factors that were analyzed, the temperature was the determinant factor to liberate the compounds of interest by using low concentrations of the sample and short times of extraction. The French press was the most efficient method, obtaining values of antioxidant activity and phenolic compounds even higher than those reported by using extraction methods with solvents such as methanol.
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Affiliation(s)
- Judith Jaimez-Ordaz
- Área Académica de Química, Instituto de Ciencias Básicas e Ingeniería, Universidad Autónoma del Estado de Hidalgo, Mineral de la Reforma, Hidalgo 42184, Mexico; (J.J.-O.); (E.C.-L.); (L.G.G.-O.); (J.A.-M.)
| | - Elizabeth Contreras-López
- Área Académica de Química, Instituto de Ciencias Básicas e Ingeniería, Universidad Autónoma del Estado de Hidalgo, Mineral de la Reforma, Hidalgo 42184, Mexico; (J.J.-O.); (E.C.-L.); (L.G.G.-O.); (J.A.-M.)
| | - Tania Hernández-Sánchez
- Área Académica de Gastronomía, Instituto de Ciencias Económico Administrativas, Universidad Autónoma del Estado de Hidalgo, Circuito La Concepción Km 2.5 Col. San Juan Tilcuautla, San Agustín Tlaxiaca, Hidalgo 42160, Mexico;
| | - Luis Guillermo González-Olivares
- Área Académica de Química, Instituto de Ciencias Básicas e Ingeniería, Universidad Autónoma del Estado de Hidalgo, Mineral de la Reforma, Hidalgo 42184, Mexico; (J.J.-O.); (E.C.-L.); (L.G.G.-O.); (J.A.-M.)
| | - Javier Añorve-Morga
- Área Académica de Química, Instituto de Ciencias Básicas e Ingeniería, Universidad Autónoma del Estado de Hidalgo, Mineral de la Reforma, Hidalgo 42184, Mexico; (J.J.-O.); (E.C.-L.); (L.G.G.-O.); (J.A.-M.)
| | - Juan Ramírez-Godínez
- Área Académica de Gastronomía, Instituto de Ciencias Económico Administrativas, Universidad Autónoma del Estado de Hidalgo, Circuito La Concepción Km 2.5 Col. San Juan Tilcuautla, San Agustín Tlaxiaca, Hidalgo 42160, Mexico;
- Correspondence: ; Tel.: +52-771-7172000 (ext. 2512)
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54
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Wang Y, Ouyang F, Teng C, Qu J. Optimization for the extraction of polyphenols from Inonotus obliquus and its antioxidation activity. Prep Biochem Biotechnol 2021; 51:852-859. [PMID: 33439073 DOI: 10.1080/10826068.2020.1864642] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
In order to study the extraction process and antioxidative activity of Inonotus obliquus polyphenols (IOP), the optimal extraction process was determined by orthogonal experiment optimization. The clearance rate of DPPH and hydroxyl radicals were used as indicators to evaluate the antioxidant activity of IOP. The results showed that the optimum extraction conditions were as follows: ethanol concentration of 50%, solid-liquid ratio of 1:20, temperature of 60 °C, and 90 min. Under these conditions, the extraction yield of IOP was 2.84%. The antioxidant capacity of extracts appeared to be IOP dose-dependent, while it also presented stronger ferric reducing antioxidant power (FRAP). High Performance Liquid Chromatography (HPLC-MS) analysis indicated that the major identified polyphenol compounds extracted at the optimal conditions were ten compounds (procyanidin, caffeic acid, p-coumaric acid, isorhamnetin-3-O-glucoside, astilbin, tangeretin, gallic acid, kaempferol, quercetin, and catechin 7-xyloside). These findings indicate that I. obliquus polyphenols have the potential to be developed as a natural antioxidant and have a good application prospect.
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Affiliation(s)
- Yu Wang
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin, China.,Harbin Center for Disease Control and Prevention, Harbin, China
| | - Fengju Ouyang
- Institute of Advanced Technology, Heilongjiang Academy of Sciences, Harbin, China
| | - Chunying Teng
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin, China
| | - Juanjuan Qu
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin, China
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55
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Identification of VOCs in essential oils extracted using ultrasound- and microwave-assisted methods from sweet cherry flower. Sci Rep 2021; 11:1167. [PMID: 33441964 PMCID: PMC7806641 DOI: 10.1038/s41598-020-80891-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 12/28/2020] [Indexed: 01/29/2023] Open
Abstract
The floral fragrance of plants is an important indicator in their evaluation. The aroma of sweet cherry flowers is mainly derived from their essential oil. In this study, based on the results of a single-factor experiment, a Box-Behnken design was adopted for ultrasound- and microwave-assisted extraction of essential oil from sweet cherry flowers of the Brooks cultivar. With the objective of extracting the maximum essential oil yield (w/w), the optimal extraction process conditions were a liquid-solid ratio of 52 mL g-1, an extraction time of 27 min, and a microwave power of 435 W. The essential oil yield was 1.23%, which was close to the theoretical prediction. The volatile organic compounds (VOCs) of the sweet cherry flowers of four cultivars (Brooks, Black Pearl, Tieton and Summit) were identified via headspace solid phase microextraction (SPME) and gas chromatography-mass spectrometry (GC-MS). The results showed that a total of 155 VOCs were identified and classified in the essential oil from sweet cherry flowers of four cultivars, 65 of which were shared among the cultivars. The highest contents of VOCs were aldehydes, alcohols, ketones and esters. Ethanol, linalool, lilac alcohol, acetaldehyde, (E)-2-hexenal, benzaldehyde and dimethyl sulfide were the major volatiles, which were mainly responsible for the characteristic aroma of sweet cherry flowers. It was concluded that the VOCs of sweet cherry flowers were qualitatively similar; however, relative content differences were observed in the four cultivars. This study provides a theoretical basis for the metabolism and regulation of the VOCs of sweet cherry flowers.
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56
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da Silva Francischini D, Lopes AP, Segatto ML, Stahl AM, Zuin VG. Development and application of green and sustainable analytical methods for flavonoid extraction from Passiflora waste. BMC Chem 2020; 14:56. [PMID: 32968737 PMCID: PMC7501698 DOI: 10.1186/s13065-020-00710-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 09/10/2020] [Indexed: 11/10/2022] Open
Abstract
Brazilian biodiversity and favourable environmental conditions open up possibilities not yet explored, showing potential to shift the country's monochromatic economy into an emancipated, diversified and sustainable economic environment. This can be made possible through the integral use of its resources, exploring every functional fraction to create novel solutions to modern problems. Biorefineries present an interesting strategy to fully use the potential of agricultural feedstocks and together with green separation methods can contribute to the generation of sustainable processes and products. Passion Fruit (Passiflora edulis Sims f. flavicarpa Deg species) is produced on a large scale in Brazil and in other tropical countries, and its processing plants generate tons of residues that basically consist of peel, seeds and bagasse, which account for around 75% of its mass. These fractions of P. edulis can contain significant amounts of flavonoids, secondary metabolites that are the main compounds responsible for the fruit's bioactivity (antioxidant, anti-inflammatory, pesticide and biocide, in general). Therefore, this work aims to develop, apply and compare the best conditions for the extraction of isoorientin, orientin and isovitexin from passion fruit applying solid-liquid methodologies, followed by analyte quantification using UHPLC-PDA. Homogenizer-assisted (HAE), ultrasound-assisted (UAE) and microwave-assisted (MAE) extraction techniques were used, as well as a full factorial design to reach optimal parameters concerning the extraction yield and energy and solvent efficiencies. According to the results, the procedure based on HAE presented the best conditions for the extraction of selected flavonoids (1.07, 0.90 and 0.33 mg g-1 of isoorientin, orientin and isovitexin, respectively) and was considered the best method according to the green and sustainable described factors.
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Affiliation(s)
| | - Ana Paula Lopes
- Department of Chemistry, Federal University of São Carlos, São Carlos, São Paulo 15653-905 Brazil
| | - Mateus Lodi Segatto
- Department of Chemistry, Federal University of São Carlos, São Carlos, São Paulo 15653-905 Brazil
| | - Aylon Matheus Stahl
- Department of Chemistry, Federal University of São Carlos, São Carlos, São Paulo 15653-905 Brazil
| | - Vânia Gomes Zuin
- Department of Chemistry, Federal University of São Carlos, São Carlos, São Paulo 15653-905 Brazil
- Green Chemistry Centre of Excellence, University of York, North Yorkshire, YO10 5DD UK
- Institute of Sustainable and Environmental Chemistry, Leuphana University, Universitätsallee 1, C13, 13352 Lüneburg, Germany
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57
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Ultrasound-assisted extraction of ergosterol and antioxidant components from mushroom by-products and the attainment of a β-glucan rich residue. Food Chem 2020; 332:127390. [DOI: 10.1016/j.foodchem.2020.127390] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 06/17/2020] [Accepted: 06/17/2020] [Indexed: 12/18/2022]
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58
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Optimization of Microwave and Ultrasound Extraction Methods of Açai Berries in Terms of Highest Content of Phenolic Compounds and Antioxidant Activity. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10238325] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Rapid technological progress focuses on lowering costs, labor and time. Thus, in order to minimize the expenses of bioactive compound production, great effort is undertaken to optimize the extraction of these compounds. Green extraction is popular and relatively inexpensive. However, the same extraction method does not always work for all types of matrixes due to the biological diversity of the tissue. Therefore, the purpose of this study was to identify the optimal green extraction method of açai berries (ultrasound or microwaves) able to isolate extracts containing the highest possible number of phenolic compounds with the highest antioxidant activity. The results show that the highest content of total phenolic compounds in the extracts was obtained after the application of a temperature of 45 °C, using ultrasound for 25 min and 45 min, microwaves for 3.16 min and a water bath for 25 min. Ultrasound turned out to be the most effective method of flavonoid extraction. In turn, the highest anthocyanin content was obtained for microwave extraction. Additionally, the application of microwaves for 4.33 min (45 °C) guaranteed the highest ferric-reducing antioxidant activity (FRAP) among the extracts. The results show that the use of microwaves shortens the açai extraction time and ensures both a high content of total phenolic compounds and strong antioxidant activity in the extract.
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59
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Sun L, Liu L, Yang L, Wang Y, Dabbour M, Mintah BK, He R, Ma H. Effects of low‐intensity ultrasound on the biomass and metabolite of
Ganoderma lucidum
in liquid fermentation. J FOOD PROCESS ENG 2020. [DOI: 10.1111/jfpe.13601] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Ling Sun
- School of Food and Biological Engineering Jiangsu University Zhenjiang China
- Institute of Food Physical Processing Jiangsu University Zhenjiang China
| | - Liping Liu
- School of Food and Biological Engineering Jiangsu University Zhenjiang China
- Institute of Food Physical Processing Jiangsu University Zhenjiang China
| | - Lei Yang
- School of Food and Biological Engineering Jiangsu University Zhenjiang China
- Institute of Food Physical Processing Jiangsu University Zhenjiang China
| | - Yazhen Wang
- School of Food and Biological Engineering Jiangsu University Zhenjiang China
- Institute of Food Physical Processing Jiangsu University Zhenjiang China
| | - Mokhtar Dabbour
- Department of Agricultural and Biosystems Engineering, Faculty of Agriculture Benha University Moshtohor, Qaluobia Egypt
| | | | - Ronghai He
- School of Food and Biological Engineering Jiangsu University Zhenjiang China
- Institute of Food Physical Processing Jiangsu University Zhenjiang China
| | - Haile Ma
- School of Food and Biological Engineering Jiangsu University Zhenjiang China
- Institute of Food Physical Processing Jiangsu University Zhenjiang China
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60
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Silva PB, Mendes LG, Rehder APB, Duarte CR, Barrozo MAS. Optimization of ultrasound-assisted extraction of bioactive compounds from acerola waste. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2020; 57:4627-4636. [PMID: 33087974 DOI: 10.1007/s13197-020-04500-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 03/27/2020] [Accepted: 04/29/2020] [Indexed: 10/24/2022]
Abstract
The industrial processing of acerola (Malpighia emarginata D.C.) produces huge quantities of waste material that are badly discarded or undervalued. In spite of this, acerola wastes have a high content of antioxidant compounds. The aim of this work was to study the extraction of antioxidant compounds from acerola residues using ultrasound assisted extraction. Using multiple regression techniques, the effects of ethanol concentration in the hydroethanolic solution (C), extraction time (t), temperature (T), and liquid-solid ratio (R) on the total phenolic content, total flavonoid content and antioxidant potential were investigated. The best extraction conditions were identified using the desirability function, which is a multi-response optimization technique. The optimal processing parameters were 67.5% of ethanol concentration, temperature of 80.9 °C, liquid/solid ratio of 59.8 mL/g, and extraction time of 13.6 min. HPLC-UV has been used to identify the main antioxidant compounds obtained under these optimal condition. Based on the results, acerola waste has high potential for better use, such as in food and pharmaceutical applications.
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Affiliation(s)
- Priscila B Silva
- Federal Center of Technological Education of Minas Gerais, Campus Timóteo, Timóteo, MG Brazil
| | - Lorena G Mendes
- Faculty of Chemical Engineering, Federal University of Uberlândia, Uberlândia, MG Brazil
| | - Ana P B Rehder
- Faculty of Chemical Engineering, Federal University of Uberlândia, Uberlândia, MG Brazil
| | - Claudio R Duarte
- Faculty of Chemical Engineering, Federal University of Uberlândia, Uberlândia, MG Brazil
| | - Marcos A S Barrozo
- Faculty of Chemical Engineering, Federal University of Uberlândia, Uberlândia, MG Brazil
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61
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Elsayed N, Hammad KSM, Abd El‐Salam EAE. Plum (
Prunus domestica
L.) leaves extract as a natural antioxidant: Extraction process optimization and sunflower oil oxidative stability evaluation. J FOOD PROCESS PRES 2020. [DOI: 10.1111/jfpp.14813] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nesren Elsayed
- Department of Food Science Faculty of Agriculture Cairo University Egypt
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62
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Wu Q, Er-Bu A, Liang X, Luan S, He C, Yin L, Yin Z, Zou Y, Li L, Song X. Determination of the main naphthoquinones in Onosma hookeri Clarke. var. longiforum Duthie and its optimization of the ultrasound-assisted extraction using response surface methodology. J Food Sci 2020; 86:357-365. [PMID: 32984979 DOI: 10.1111/1750-3841.15460] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 08/13/2020] [Accepted: 08/26/2020] [Indexed: 11/28/2022]
Abstract
In this study, besides isovaleryl shikonin, another shikonin derivative, tigloylshikonin, was also isolated from the roots of Onosma hookeri Clarke. var. longiforum Duthie as a main naphthoquinone constituent for the first time. Then optimization of the ultrasonic-assisted extraction was done by Box-Behnken design-response surface methodology on the basis of single-factor experiments. The optimized conditions were 72% (v/v) ethanol and the material to solution ratio was 1:37(g/mL) at 52 °C for 77 min. Under these conditions, the extraction yield of ethanol extract was 36.74 ± 0.32%, the contents of isovaleryl shikonin and tigloylshikonin reached 0.094 ± 0.003% and 0.223 ± 0.006%, respectively. Notably, in that optimized condition, the yield of isovaleryl shikonin increased by approximately 7.64-fold than the previous report. In the in vitro antioxidant activity assay, the optimal ethanol extract exhibited similar 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging activity as butylated hydroxy toluene (BHT), but slightly weaker 2,2'-azino-bis-3-ethylbenzthiazoline-6-sulphonic acid (ABTS) scavenging activity and total antioxidant capacity than that of BHT. However, the active polar fraction, the ethyl acetate fraction, which is enriched with naphthoquinone constituents, performs as a better antioxidant agent than BHT. Therefore, both of them could be considered as a naturally sourced antioxidants compared to commercially available synthetic drugs. PRACTICAL APPLICATION: Onosma hookeri Clarke. var. longiforum Duthie, a traditional Chinese medicine and food item, has been in use since a long time. A systematic determination of the main naphthoquinones, and antioxidant capacity of the naphthoquinones-enriched ethanol extract and different polar fractions, was carried out in the present study. The results may provide theoretical basis for the claim that naphthoquinones-enriched ethanol extract and ethyl acetate fraction from the roots of Onosma hookeri Clarke. var. longiforum Duthie could be used as potential natural antioxidants in the pharmaceutical, food, and cosmetic industries.
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Affiliation(s)
- Qiang Wu
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural Univ., Chengdu, 611130, P. R. China
| | - Aga Er-Bu
- Medical College, Tibet Univ., Lasa, 850000, P. R. China
| | - Xiaoxia Liang
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural Univ., Chengdu, 611130, P. R. China
| | - Shangxian Luan
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural Univ., Chengdu, 611130, P. R. China
| | - Changliang He
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural Univ., Chengdu, 611130, P. R. China
| | - Lizi Yin
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural Univ., Chengdu, 611130, P. R. China
| | - Zhongqiong Yin
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural Univ., Chengdu, 611130, P. R. China
| | - Yuanfeng Zou
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural Univ., Chengdu, 611130, P. R. China
| | - Lixia Li
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural Univ., Chengdu, 611130, P. R. China
| | - Xu Song
- Natural Medicine Research Center, College of Veterinary Medicine, Sichuan Agricultural Univ., Chengdu, 611130, P. R. China
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63
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An update on the health benefits promoted by edible flowers and involved mechanisms. Food Chem 2020; 340:127940. [PMID: 32889216 DOI: 10.1016/j.foodchem.2020.127940] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 07/25/2020] [Accepted: 08/23/2020] [Indexed: 12/13/2022]
Abstract
The aim of this review is to provide new findings on health effects of edible flowers since 2015. The antioxidant, anti-inflammatory, anti-cancer, hepatoprotective, neuroprotective, anti-diabetic, anti-osteoporosis, anti-obesity, and anti-hypertensive have been reviewed, and the effective concentrations of flower extracts have been summarized. Among all the health benefits mentioned, anti-osteoporosis, anti-obesity, and anti-hypertensive have rarely been mentioned before 2015. Some health benefits mechanisms of edible flowers were discussed frequently after 2015. Some newly found phytochemicals such as polysaccharides were shown to be beneficial to human health. Species of Rosa, Chrysanthemum, and Osmanthus have been reported to exert different health effects on human. For the toxicity studies, the safe level of flower extracts in cell and animal models were at hundreds of parts per million (ppm) level. In consideration of health promoting effects and toxicities of edible flowers, they could serve as potential natural health products for different health benefits.
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64
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Wang G, Cui Q, Yin LJ, Li Y, Gao MZ, Meng Y, Li J, Zhang SD, Wang W. Negative pressure cavitation based ultrasound-assisted extraction of main flavonoids from Flos Sophorae Immaturus and evaluation of its extraction kinetics. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.115805] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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65
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Olawuyi IF, Park JJ, Lee WY. Effect of extraction conditions on ultrasonic-assisted extraction of
polyphenolic compounds from okra (Abelmoschus esculentus L.)
leaves. ACTA ACUST UNITED AC 2020. [DOI: 10.11002/kjfp.2020.27.4.476] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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66
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Effects of Microwave-Assisted Extraction Conditions on Antioxidant Capacity of Sweet Tea ( Lithocarpus polystachyus Rehd.). Antioxidants (Basel) 2020; 9:antiox9080678. [PMID: 32751188 PMCID: PMC7464483 DOI: 10.3390/antiox9080678] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 07/25/2020] [Accepted: 07/27/2020] [Indexed: 12/16/2022] Open
Abstract
In this study, the effects of microwave-assisted extraction conditions on antioxidant capacity of sweet tea (Lithocarpus polystachyus Rehd.) were studied and the antioxidants in the extract were identified. The influences of ethanol concentration, solvent-to-sample ratio, microwave power, extraction temperature and extraction time on Trolox equivalent antioxidant capacity (TEAC) value, ferric reducing antioxidant power (FRAP) value and total phenolic content (TPC) were investigated by single-factor experiments. The response surface methodology (RSM) was used to study the interaction of three parameters which had significant influences on antioxidant capacity including ethanol concentration, solvent-to-sample ratio and extraction time. The optimal conditions for the extraction of antioxidants from sweet tea were found as follows—ethanol concentration of 58.43% (v/v), solvent-to-sample ratio of 35.39:1 mL/g, extraction time of 25.26 min, extraction temperature of 50 ℃ and microwave power of 600 W. The FRAP, TEAC and TPC values of the extract under the optimal conditions were 381.29 ± 4.42 μM Fe(II)/g dry weight (DW), 613.11 ± 9.32 μM Trolox/g DW and 135.94 ± 0.52 mg gallic acid equivalent (GAE)/g DW, respectively. In addition, the major antioxidant components in the extract were detected by high-performance liquid chromatography with diode array detection (HPLC-DAD), including phlorizin, phloretin and trilobatin. The crude extract could be used as food additives or developed into functional food for the prevention and management of oxidative stress-related diseases.
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67
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The effects of ultrasound assisted extraction on yield, antioxidant, anticancer and antimicrobial activity of polyphenol extracts: A review. FOOD BIOSCI 2020. [DOI: 10.1016/j.fbio.2020.100547] [Citation(s) in RCA: 137] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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68
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Sedraoui S, Badr A, Barba MGM, Doyen A, Tabka Z, Desjardins Y. Optimization of the Ultrahigh-Pressure–Assisted Extraction of Phenolic Compounds and Antioxidant Activity from Palm Dates (Phoenix dactylifera L.). FOOD ANAL METHOD 2020. [DOI: 10.1007/s12161-020-01764-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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69
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Optimisation of pectin production from dragon fruit peels waste: drying, extraction and characterisation studies. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2415-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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70
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Antonio ADS, Aguiar ATC, Dos Santos GRC, Pereira HMG, da Veiga-Junior VF, Wiedemann LSM. Phytochemistry by design: a case study of the chemical composition of Ocotea guianensis optimized extracts focused on untargeted metabolomics analysis. RSC Adv 2020; 10:3459-3471. [PMID: 35497754 PMCID: PMC9048970 DOI: 10.1039/c9ra10436d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 01/15/2020] [Indexed: 02/04/2023] Open
Abstract
Untargeted metabolomics aim to provide a global chemical fingerprint of biological matrices. This research field can be used in phytochemical screenings for bioactive species or in the identification of species. Despite its importance in providing a global chemical profile, little research has focused on the optimization of the extraction methods, as each type of matrix requires a specific procedure. Therefore, we propose to evaluate the effect of different extraction features in an ultrasound-assisted extraction for the untargeted metabolomic study of an Ocotea species, a genus of great economical interest but little chemical exploitation. Method optimization was performed in a full factorial 2232 design, evaluating the solvent composition, extraction temperature, sample particle size and sample : solvent ratio effects in the metabolomic response. The effect of these parameters on the quality of the untargeted metabolomic profiles was studied by analysis of the extraction yield as well as the chromatographic and spectrometric profiles. Most substances identified were glycosylated flavonoids and aporphinic alkaloids. The application of 70% ethanol enhanced the extraction of several specialized metabolites. Statistical analysis of extraction yield and chemical profiles indicates that high temperatures and low proportion between sample and extracting solvent reduce the quality and modify the chemical profile, both qualitatively and quantitatively. The use of 70% ethanol as the extracting solvent, 1 : 12 sample : solvent ratio, 40 °C as the extraction temperature and particle size of 0.595 mm were the optimized conditions to produce a comprehensive chemical profile for Ocotea guianensis.
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Affiliation(s)
- Ananda da Silva Antonio
- Chemistry Department, Institute of Exact Sciences, Federal University of Amazonas Avenida Rodrigo Octávio, 6200, Coroado CEP: 69.077-000 Manaus AM Brazil
| | - Ana Tayná Chaves Aguiar
- Chemistry Department, Institute of Exact Sciences, Federal University of Amazonas Avenida Rodrigo Octávio, 6200, Coroado CEP: 69.077-000 Manaus AM Brazil
| | - Gustavo Ramalho Cardoso Dos Santos
- Federal University of Rio de Janeiro, Chemistry Institute, Brazilian Doping Control Laboratory (LBCD - LADETEC/IQ - UFRJ) Avenida Horácio Macedo, 1281 - Pólo de Química - Cidade Universitária, Ilha do Fundão CEP: 21941-598 Rio de Janeiro RJ Brazil
| | - Henrique Marcelo Gualberto Pereira
- Federal University of Rio de Janeiro, Chemistry Institute, Brazilian Doping Control Laboratory (LBCD - LADETEC/IQ - UFRJ) Avenida Horácio Macedo, 1281 - Pólo de Química - Cidade Universitária, Ilha do Fundão CEP: 21941-598 Rio de Janeiro RJ Brazil
| | - Valdir Florêncio da Veiga-Junior
- Chemistry Department, Institute of Exact Sciences, Federal University of Amazonas Avenida Rodrigo Octávio, 6200, Coroado CEP: 69.077-000 Manaus AM Brazil
- Chemical Engineering Section, Military Institute of Engineering Praça General Tibúrcio, 80, Praia Vermelha, Urca CEP: 22.290-270 Rio de Janeiro RJ Brazil
| | - Larissa Silveira Moreira Wiedemann
- Chemistry Department, Institute of Exact Sciences, Federal University of Amazonas Avenida Rodrigo Octávio, 6200, Coroado CEP: 69.077-000 Manaus AM Brazil
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71
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Antioxidant Capacity and Antigenotoxic Effect of Hibiscus sabdariffa L. Extracts Obtained with Ultrasound-Assisted Extraction Process. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10020560] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Hibiscus sabdariffa (Roselle) is in high demand worldwide due to its beneficial health properties owing to the polyphenols content, mainly in the flower calyx. The objective of this study was to find the best conditions (time and liquid: solid ratio) to extract polyphenols from Roselle using Ultrasound-Assisted Extraction (UAE) (40 kHz, 180 W), with ethanol how solvent; as well as determine the yield of phenols, anthocyanin, flavonoids, tannins, antioxidant activity (DPPH) and antigenotoxic effect (comet assay). A traditional solid-liquid extraction was applied as a reference. Extraction times of 40 and 60 min resulted in the highest polyphenols (13.019 mg GAE/g dry weight (dw)), flavonoids (4.981 CE/g dw), anthocyanins (1.855 mg Cya3GE/g dw), and tannins (0.745 CE/g dw) recoveries and an antioxidant activity (DPPH) of 74.58%. Extracts from white calyces contained similar amounts of phenols and flavonoids, but very little condensed tannins (0.049 CE/g dw) and practically no anthocyanins. Extracts from red and white calyces, showed antigenotoxic activity and repaired capacity of damage caused by mutagens in human lymphocytes.
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72
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Zhu L, Chen X, Wu Z, Wang G, Ahmad Z, Chang M. Optimization conversion of chitosan from
Ganoderma lucidum
spore powder using ultrasound‐assisted deacetylation: Influence of processing parameters. J FOOD PROCESS PRES 2020. [DOI: 10.1111/jfpp.14297] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Li‐Fang Zhu
- Department of Biomedical Engineering Key Laboratory of Ministry of Education Zhejiang University Hangzhou P.R. China
- Zhejiang Provincial Key Laboratory of Cardio‐Cerebral Vascular Detection Technology and Medicinal Effectiveness Appraisal Zhejiang University Hangzhou P.R. China
| | - Xing Chen
- Zhejiang Provincial Key Laboratory of Cardio‐Cerebral Vascular Detection Technology and Medicinal Effectiveness Appraisal Zhejiang University Hangzhou P.R. China
| | - Zijing Wu
- Tianhe Agricultural Group Longquan P.R. China
| | | | - Zeeshan Ahmad
- Leicester School of Pharmacy De Montfort University Leicester UK
| | - Ming‐Wei Chang
- Department of Biomedical Engineering Key Laboratory of Ministry of Education Zhejiang University Hangzhou P.R. China
- Zhejiang Provincial Key Laboratory of Cardio‐Cerebral Vascular Detection Technology and Medicinal Effectiveness Appraisal Zhejiang University Hangzhou P.R. China
- Nanotechnology and Integrated Bioengineering Centre University of Ulster Newtownabbey UK
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73
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Neves NCV, Mello MPD, Amorim JM, Faraco AAG, Castilho RO. Optimization of phenolic compounds extraction from Campomanesia lineatifolia leaves. RODRIGUÉSIA 2020. [DOI: 10.1590/2175-7860202071043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Abstract Campomanesia lineatifolia (gabiroba) is a native edible species found in the Amazon Rainforest. Previous studies have demonstrated the flavonoid nature of ethanolic extract from the C. lineatifolia leaves, in addition to gastroprotective activity and TNF inhibition. However, the extraction process used was long and consumed a large amount of solvent. Therefore, the objective of this study was to obtain a bioactive extract rich in phenolics, in an extractive method of simpler, faster, and lower-cost execution. The C. lineatifolia leaves were dried and crushed, and the extractions were carried out in different solvents/mixtures (ethanol, methanol, ethyl acetate, and water) under ultrasonic bath (UB), electromagnetic stirring, and continuous reflux extraction (R). The extraction efficiency was evaluated by the flavonoid major compound concentration in the extracts, in a method developed by ultra-high performance liquid chromatography (UHPLC). Injection and pattern matching tests, and UHPLC analyses coupled to ultraviolet spectrometry were conducted to identify catechin and quercitrin. It has been demonstrated that the ethanolic extraction by R and the mixture of ethanol: water (8:2) by UB represented optimized methods in obtaining the flavonoid compounds identified. Thus, the results may contribute to chemical-biological extract standardization for gastric antiulcer activity evaluation.
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74
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Vakula A, Šumić Z, Zeković Z, Tepić Horecki A, Pavlić B. Screening, influence analysis and optimization of ultrasound‐assisted extraction parameters of cornelian cherries (
Cornus mas
L.). J FOOD PROCESS PRES 2019. [DOI: 10.1111/jfpp.14226] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Anita Vakula
- Faculty of Technology University of Novi Sad Novi Sad Serbia
| | - Zdravko Šumić
- Faculty of Technology University of Novi Sad Novi Sad Serbia
| | - Zoran Zeković
- Faculty of Technology University of Novi Sad Novi Sad Serbia
| | | | - Branimir Pavlić
- Faculty of Technology University of Novi Sad Novi Sad Serbia
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75
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Extraction of Antioxidants from Blackberry (Rubus ulmifolius L.): Comparison between Ultrasound- and Microwave-Assisted Extraction Techniques. AGRONOMY-BASEL 2019. [DOI: 10.3390/agronomy9110745] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Berries are considered functional food because of their potential health benefits to consumers due to their high concentrations in bioactive compounds. The extraction process of their antioxidant compounds is a crucial step. In this work, ultrasound (UAE) and microwave (MAE) assisted extraction have been evaluated and compared for the recovery of total phenolic compounds (TPC) and total anthocyanins (TA) from blackberry. Since several variables have an influence on the extraction processes efficiency, a response surface method using a Box–Behnken design (BBD) was chosen for the optimization of UAE and MAE variables. Six variables (solvent, temperature, amplitude, cycle, pH, and sample:solvent ratio) were optimized for UAE while the optimization for MAE was performed on four variables (solvent, temperature, pH, and sample:solvent ratio). It has been proven that solvent and temperature have a significant influence on the extraction of both TA and TPC. Only 10 and 5 min were necessary to complete the UAE and MAE procedures, respectively. A precision study was also carried out, and coefficient of variation lower than 5% was determined. Non-significant differences were obtained when using UAE and MAE at their respective optimum conditions. Thus, the results demonstrated a successful potential use of both techniques for the extraction of TA and TPC from blackberry. In conclusion, this work shows interesting perspectives for quality control analytical laboratories for the development of rapid extraction techniques to quantify these antioxidant compounds in blackberries.
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76
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Ran L, Yang C, Xu M, Yi Z, Ren D, Yi L. Enhanced aqueous two-phase extraction of proanthocyanidins from grape seeds by using ionic liquids as adjuvants. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.05.089] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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77
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Dzah CS, Duan Y, Zhang H, Golly MK, Ma H. Enhanced screening of key ultrasonication parameters: total phenol content and antioxidant activity assessment of Tartary buckwheat (Fagopyrum tataricum) water extract. SEP SCI TECHNOL 2019. [DOI: 10.1080/01496395.2019.1675704] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Courage Sedem Dzah
- Department of Food Science and Engineering, School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
- Department of Food Science and Technology, Faculty of Applied Sciences and Technology, Ho Technical University, Ho, Ghana
| | - Yuqing Duan
- Department of Food Science and Engineering, School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
- Institute of Food Physical Processing, Jiangsu University, Zhenjiang, China
| | - Haihui Zhang
- Department of Food Science and Engineering, School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Moses Kwaku Golly
- Department of Food Science and Engineering, School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
- Faculty of Applied Sciences and Technology, Sunyani Technical University, Sunyani, Ghana
| | - Haile Ma
- Department of Food Science and Engineering, School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
- Institute of Food Physical Processing, Jiangsu University, Zhenjiang, China
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78
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Tahmasebi-Boldaji R, Hatamipour MS, Khanahmadi M, Sadeh P, Najafipour I. Ultrasound-assisted packed-bed extraction of hypericin from Hypericum perforatum L. and optimization by response surface methodology. ULTRASONICS SONOCHEMISTRY 2019; 57:89-97. [PMID: 31208622 DOI: 10.1016/j.ultsonch.2019.05.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Revised: 05/12/2019] [Accepted: 05/15/2019] [Indexed: 06/09/2023]
Abstract
This paper presents the successful application of ultrasound-assisted packed-bed (UAE-PB) method for the extraction of hypericin from the Hypericum perfuratum L. The Soxhlet system was utilized for the determination of suitable solvent from ethanol, methanol or from the mixture of different proportions of ethanol-methanol. The mixture of 50:50 v/v ethanol-methanol was obtained to be the most suitable solvent since it led to the highest extraction amount of hypericin. The extraction amount of hypericin increased by 13.6% and 21.4% when the solvent changed from pure methanol to the mixture of 50:50 v/v ethanol-methanol for the extraction time of 3 and 8 h, respectively. Subsequently, the extraction was conducted through the UAE-PB, and the effects of temperature, time, and the ratio of solvent to the dried plant were studied. The response surface method (RSM) was used to investigate the effect of parameters on the extraction in the UAE-PB system. At the temperature of 60 °C, extraction time of 105 min, and the solvent to plant ratio of 15.3, the maximum extraction yield of hypericin was achieved. In the optimal conditions, the amount of extraction was 0.112 mg hypericin/g dried plant, which was in accordance with the optimized predicted value (0.111 mg hypericin/g dried plant) from Design-Expert software.
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Affiliation(s)
- Ramin Tahmasebi-Boldaji
- Department of Chemical Engineering, College of Engineering, University of Isfahan, P.O. Box 81746-73441, Isfahan, Iran
| | - Mohammad-Sadegh Hatamipour
- Department of Chemical Engineering, College of Engineering, University of Isfahan, P.O. Box 81746-73441, Isfahan, Iran.
| | - Morteza Khanahmadi
- Agricultural Biotechnology Research Institute of Iran - Isfahan Branch, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
| | - Pegah Sadeh
- Chemical Engineering Discipline, School of Engineering, Monash University, Malaysia
| | - Iman Najafipour
- Department of Chemical Engineering, College of Engineering, University of Isfahan, P.O. Box 81746-73441, Isfahan, Iran
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79
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Zhang L, Jiang Y, Pang X, Hua P, Gao X, Li Q, Li Z. Simultaneous Optimization of Ultrasound-Assisted Extraction for Flavonoids and Antioxidant Activity of Angelica keiskei Using Response Surface Methodology (RSM). Molecules 2019; 24:E3461. [PMID: 31554203 PMCID: PMC6804174 DOI: 10.3390/molecules24193461] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 09/06/2019] [Accepted: 09/18/2019] [Indexed: 02/02/2023] Open
Abstract
Angelica keiskei Koidzumi (A. keiskei), as a Japanese edible herbal plant, enjoys a variety of biological activities due to the presence of numerous active compounds, especially flavonoids. This study aims for the optimization of ultrasound-assisted extraction (UAE) for flavonoids in A. keiskei and their antioxidant activity by using the response surface methodology (RSM). Single-factor experiments and a four-factor three-level Box-Behnken design (BBD) were performed to explore the effects of the following parameters on flavonoid extraction and antioxidant activity evaluation: ultrasonic temperature (X1), ultrasonic time (X2), ethanol concentration (X3) and liquid-solid ratio (X4). The optimum conditions of the combination of total flavonoid content (TFC), 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging capacity (DPPH-RSC) and ferric-reducing antioxidant power (FRAP) were as follows: X1 = 80 °C, X2 = 4 min, X3 = 78%, X4 = 35 mL/g, respectively. The experimental results provide a theoretical basis for the extensive utilization of A. keiskei and flavonoids extraction from A. keiskei as a potential source of antioxidants.
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Affiliation(s)
- Lei Zhang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China.
- Institute of Angelica keiskei Health Industry Technology, Qingdao University, Qingdao 266071, China.
| | - Yuhuan Jiang
- Institute of Angelica keiskei Health Industry Technology, Qingdao University, Qingdao 266071, China.
- Institute of Advanced Cross-Field Science, College of Life Sciences, Qingdao University, Qingdao 266071, China.
| | - Xuening Pang
- Institute of Angelica keiskei Health Industry Technology, Qingdao University, Qingdao 266071, China.
- Institute of Advanced Cross-Field Science, College of Life Sciences, Qingdao University, Qingdao 266071, China.
| | - Puyue Hua
- Institute of Angelica keiskei Health Industry Technology, Qingdao University, Qingdao 266071, China.
- Institute of Advanced Cross-Field Science, College of Life Sciences, Qingdao University, Qingdao 266071, China.
| | - Xiang Gao
- Institute of Angelica keiskei Health Industry Technology, Qingdao University, Qingdao 266071, China.
- Institute of Advanced Cross-Field Science, College of Life Sciences, Qingdao University, Qingdao 266071, China.
| | - Qun Li
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China.
- Institute of Angelica keiskei Health Industry Technology, Qingdao University, Qingdao 266071, China.
| | - Zichao Li
- Institute of Angelica keiskei Health Industry Technology, Qingdao University, Qingdao 266071, China.
- Institute of Advanced Cross-Field Science, College of Life Sciences, Qingdao University, Qingdao 266071, China.
- Qingdao Balanson Biotech Co., Ltd., Qingdao 266071, China.
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80
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Li F, Zhao H, Xu R, Zhang X, Zhang W, Du M, Liu X, Fan L. Simultaneous optimization of the acidified water extraction for total anthocyanin content, total phenolic content, and antioxidant activity of blue honeysuckle berries ( Lonicera caerulea L.) using response surface methodology. Food Sci Nutr 2019; 7:2968-2976. [PMID: 31572590 PMCID: PMC6766558 DOI: 10.1002/fsn3.1152] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 05/23/2019] [Accepted: 05/28/2019] [Indexed: 12/30/2022] Open
Abstract
The purpose of this study was to optimize the total anthocyanin content (TAC), total phenolic content (TPC), and antioxidant activity of acidified water extract from blue honeysuckle berries by response surface methodology (RSM). The optimized conditions were HCl concentration of 0.35%, liquid-solid ratio of 49.42 ml/g, and extraction temperature of 41.56°C for total anthocyanin content (24.01 ± 0.37 mg/g), total phenolic content (207.03 ± 3.31 mg/g), DPPH radical scavenging activity (68.24 ± 1.13%), and ABTS radical scavenging activity (70.05 ± 0.84%). The experimental results are consistent with the predicted values. The results showed that acidified water extraction was an effective, simple, and green technique for the extraction of total anthocyanins, total phenol, and antioxidant activity from blue honeysuckle berries.
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Affiliation(s)
- Fengfeng Li
- College of Food ScienceNortheast Agriculture UniversityHarbinChina
| | - Hengtian Zhao
- Northeast Institute of Geography and Agroecology Chinese Academy of SciencesHarbinChina
| | - Ruiru Xu
- College of Food ScienceNortheast Agriculture UniversityHarbinChina
| | - Xiuling Zhang
- College of Food ScienceNortheast Agriculture UniversityHarbinChina
| | - Wentao Zhang
- College of Food ScienceNortheast Agriculture UniversityHarbinChina
| | - Meiling Du
- College of Food ScienceNortheast Agriculture UniversityHarbinChina
| | - Xiaochen Liu
- College of Food ScienceNortheast Agriculture UniversityHarbinChina
| | - Lili Fan
- Northeast Institute of Geography and Agroecology Chinese Academy of SciencesHarbinChina
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81
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Savic Gajic I, Savic I, Boskov I, Žerajić S, Markovic I, Gajic D. Optimization of Ultrasound-Assisted Extraction of Phenolic Compounds from Black Locust ( Robiniae Pseudoacaciae) Flowers and Comparison with Conventional Methods. Antioxidants (Basel) 2019; 8:E248. [PMID: 31357622 PMCID: PMC6719120 DOI: 10.3390/antiox8080248] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 07/21/2019] [Accepted: 07/25/2019] [Indexed: 02/01/2023] Open
Abstract
The aim of this study was to optimize the ultrasound-assisted extraction of phenolic compounds from black locust (Robiniae pseudoacaciae) flowers using central composite design. The ethanol concentration (33-67%), extraction temperature (33-67 °C), and extraction time (17-33 min) were analyzed as the factors that impact the total phenolic content. The liquid-to-solid ratio of 10 cm3 g-1 was the same during extractions. The optimal conditions were found to be 59 °C, 60% (v/v) ethanol, and extraction time of 30 min. The total phenolic content (TPC = 3.12 gGAE 100 g-1 dry plant material) and antioxidant activity (IC50 = 120.5 µg cm-3) of the extract obtained by ultrasound-assisted extraction were compared with those obtained by maceration (TPC = 2.54 gGAE 100 g-1 dry plant material, IC50 = 150.6 µg cm-3) and Soxhlet extraction (TPC = 3.22 gGAE 100 g-1 dry plant material, IC50 = 204.2 µg cm-3). The ultrasound-assisted extraction gave higher total phenolic content and better antioxidant activity for shorter extraction time so that it represents the technique of choice for the extraction of phenolic compounds. The obtained extract, as the source of antioxidants, can be applied in the pharmaceutical and food industries.
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Affiliation(s)
- Ivana Savic Gajic
- Faculty of Technology, University of Nis, Bulevar oslobodjenja 124, 16000 Leskovac, Serbia.
| | - Ivan Savic
- Faculty of Technology, University of Nis, Bulevar oslobodjenja 124, 16000 Leskovac, Serbia
| | - Ivana Boskov
- Faculty of Technology, University of Nis, Bulevar oslobodjenja 124, 16000 Leskovac, Serbia
| | - Stanko Žerajić
- Faculty of Technology, University of Nis, Bulevar oslobodjenja 124, 16000 Leskovac, Serbia
| | - Ivana Markovic
- Technical Faculty, University of Belgrade, Vojske Jugoslavije 12, 19210 Bor, Serbia
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82
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Ochoa-Velasco C, Ruíz-Espinosa H, Estévez-Sánchez K, Ruiz-López I. A sequential method to estimate equilibrium Point and diffusion coefficients of bioactive compounds during solid–liquid extraction. FOOD AND BIOPRODUCTS PROCESSING 2019. [DOI: 10.1016/j.fbp.2019.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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83
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Zhou Y, Xu XY, Gan RY, Zheng J, Li Y, Zhang JJ, Xu DP, Li HB. Optimization of Ultrasound-Assisted Extraction of Antioxidant Polyphenols from the Seed Coats of Red Sword Bean ( Canavalia gladiate (Jacq.) DC.). Antioxidants (Basel) 2019; 8:antiox8070200. [PMID: 31261608 PMCID: PMC6680378 DOI: 10.3390/antiox8070200] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Revised: 06/24/2019] [Accepted: 06/25/2019] [Indexed: 11/20/2022] Open
Abstract
The seed coat of red sword bean (Canavalia gladiata (Jacq.) DC.) is rich in antioxidant polyphenols. It is often discarded as a byproduct with the consumption of red sword bean, since it is very thick and not consumed by people. The aim of this study was to develop an ultrasound-assisted extraction method to extract natural antioxidants from the seed coats. The extraction process was optimized by using response surface methodology. After the single-factor experiments, three key factors, including ethanol concentration, liquid/solid ratio, and extraction time, were selected and their interactions were studied using a central composite design. The optimal extraction condition was 60.2% hydroethanol, a liquid/solid ratio of 29.3 mL/g, an extraction time of 18.4 min, an extraction temperature of 50 °C, and ultrasound power of 400 W. Under the optimal conditions, antioxidant activity of the extract was 755.98 ± 10.23 μmol Trolox/g dry weight (DW), much higher than that from maceration (558.77 ± 14.42 μmol Trolox/g DW) or Soxhlet extraction (479.81 ± 12.75 μmol Trolox/g DW). In addition, the main antioxidant compounds in the extract were identified and quantified by high-performance liquid chromatography–diode array detection–tandem mass spectrometry (HPLC–DAD–MS/MS). The concentrations of digalloyl hexoside, methyl gallate, gallic acid, trigalloyl hexoside, and digallic acid were 15.30 ± 0.98, 8.85 ± 0.51, 8.76 ± 0.36, 4.27 ± 0.21, and 2.89 ± 0.13 mg/g DW. This study provides an efficient and green extraction method for the extraction of natural antioxidants from the bean coat of red sword bean. The extract of antioxidants might be added into functional foods or nutraceuticals with potential beneficial functions.
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Affiliation(s)
- Yue Zhou
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China
| | - Xiao-Yu Xu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China
| | - Ren-You Gan
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Jie Zheng
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China
| | - Ya Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China
| | - Jiao-Jiao Zhang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China
| | - Dong-Ping Xu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China
| | - Hua-Bin Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
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84
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Abd El-Salam EA, Morsy NFS. Optimization of the extraction of polyphenols and antioxidant activity from Malva parviflora L. leaves using Box–Behnken design. Prep Biochem Biotechnol 2019; 49:876-883. [PMID: 31244366 DOI: 10.1080/10826068.2019.1633667] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | - Nashwa F. S. Morsy
- Faculty of Agriculture, Food Science Department, Cairo University, Giza, Egypt
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85
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Li Y, Cao SY, Lin SJ, Zhang JR, Gan RY, Li HB. Polyphenolic Profile and Antioxidant Capacity of Extracts from Gordonia axillaris Fruits. Antioxidants (Basel) 2019; 8:E150. [PMID: 31146432 PMCID: PMC6616417 DOI: 10.3390/antiox8060150] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 05/24/2019] [Accepted: 05/26/2019] [Indexed: 12/29/2022] Open
Abstract
An ultrasonic-assisted extraction (UAE) method was adopted to extract natural antioxidants from edible Gordonia axillaris fruit. Single-factor experiments and response surface methodology were conducted to investigate the influences of five different parameters on antioxidant capacity. The optimal conditions of the UAE were 39.78% ethanol, 30.94 mL/g solvent/material ratio, 59.47 min extraction time, 40 °C temperature, and 400 W ultrasonication power. The antioxidant capacity was 525.05 ± 14.34 µmol Trolox/g DW under the optimal conditions, which was in agreement with the predicted one (531.71 µmol Trolox/g DW). Additionally, in comparison with two traditional methods (maceration and Soxhlet extraction), the established UAE method greatly improved the yield of antioxidants and significantly reduced the extraction time. Besides, nine phenolic compounds were identified and quantified in the extract of Gordonia axillaris fruits by ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS), including rutin, gallic acid, protocatechuic acid, epicatechin, 2-hydrocinnamic acid, p-coumaric acid, quercetin, epicatechin gallate, and ferulic acid. The richness of phenolic compounds in the Gordonia axillaris fruits indicated its potential health benefits, and its extract rich in antioxidants could be developed into functional food or nutraceuticals with the potential to prevent certain diseases induced by oxidative stress, such as cardiovascular diseases and cancers. This study also provided a way to enhance the economic values of Gordonia axillaris fruits compared to raw fruits.
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Affiliation(s)
- Ya Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
| | - Shi-Yu Cao
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
| | - Sheng-Jun Lin
- Zhongshan Center for Disease Control and Prevention, Zhongshan 528403, China.
| | - Jia-Rong Zhang
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Ren-You Gan
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Hua-Bin Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
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86
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Optimization of Ultrasound-Assisted Extraction on Antioxidative Activity of Malus toringoides Using Response Surface Methodology. Processes (Basel) 2019. [DOI: 10.3390/pr7050270] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Ultrasonic-assisted extraction (UAE) was optimized using response surface methodology (RSM) to maintain the cyto-protective activity of M.toringoides against oxidative stress. The optimal conditions for UAE were a 58 mL/g liquid-solid ratio, a 38 °C extraction temperature, an 85% solvent concentration, and a 19-min extraction time, which resulted in a protection rate of 54.57% against hydrogen peroxide-induced oxidative stress in human umbilical vein endothelial cells (HUVECs). These results were comparable to the predicted value of 53.75%. The extracts showed excellent antioxidant activity, and phlorizin was detected in the dried leaves of Malus.toringoides. The highest yield of phlorizin (101.239 mg/g) was also obtained using these conditions. Taken together, these results showed that the method successfully integrated RSM and partial least squares regression methods to optimize M.toringoides extraction to yield the highest cyto-protective activity and effectively increase the yield of phlorizin from M.toringoides.
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87
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Ismail BB, Guo M, Pu Y, Wang W, Ye X, Liu D. Valorisation of baobab (Adansonia digitata) seeds by ultrasound assisted extraction of polyphenolics. Optimisation and comparison with conventional methods. ULTRASONICS SONOCHEMISTRY 2019; 52:257-267. [PMID: 30514599 DOI: 10.1016/j.ultsonch.2018.11.023] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 11/12/2018] [Accepted: 11/25/2018] [Indexed: 05/02/2023]
Abstract
In this study, ultrasound-assisted extraction (UAE) of phenolic compounds in baobab (Adansonia digitata) seeds was optimised using RSM. Based on the single factor experiment results, the effect of four parameters, extraction time (10-20 min), temperature (40-60 °C), % amplitude (30-50) and solvent to solid ratio (20-30, mL/g) on Total Flavonoids Content (TFC) were investigated and optimised using a central composite design (CCD). The predicted optimal conditions with the highest desirably (0.874) were: 20 min, 30% amplitude, 60 °C temperature and 30 mL/g solvent to solid ratio. Under these conditions, the experimental TFC value (1633.84 ± 10.75 mg RE/100 g DW) was highly correlated with the predicted value (1631.77 mg RE/100 g DW). Moreover, a comparative study confirmed that the recovery of TFC, TPC and antioxidant activity (DPPH and FRAP) was significantly higher in UAE than maceration and Heat Assisted Extraction (HAE) extraction methods in addition to a shorter extraction time. HPLC analysis of the UAE optimised sample extract revealed the presence of 10 phenolic compounds with the highest concentration of D-(+) catechin (87.18 ± 14.57 µg/g). This study is the first attempt to optimise UAE parameters for the extraction of phenolic compounds in baobab seeds.
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Affiliation(s)
- Balarabe B Ismail
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang R & D Center for Food Technology and Equipment, Zhejiang University, Hangzhou 310058, China; Department of Food Science & Technology, Faculty of Agriculture, Bayero University, Kano, PMB 3011 Kano, Nigeria
| | - Mingming Guo
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang R & D Center for Food Technology and Equipment, Zhejiang University, Hangzhou 310058, China
| | - Yunfeng Pu
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang R & D Center for Food Technology and Equipment, Zhejiang University, Hangzhou 310058, China
| | - Wenjun Wang
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang R & D Center for Food Technology and Equipment, Zhejiang University, Hangzhou 310058, China; Department of Food Science & Technology, Oregon State University, Corvallis, OR 97331-6602, USA
| | - Xingqian Ye
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang R & D Center for Food Technology and Equipment, Zhejiang University, Hangzhou 310058, China; Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China
| | - Donghong Liu
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang R & D Center for Food Technology and Equipment, Zhejiang University, Hangzhou 310058, China; Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China.
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88
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Mass transfer modeling of the antioxidant extraction of roselle flower ( Hibiscus sabdariffa). Journal of Food Science and Technology 2019; 56:1008-1015. [PMID: 30906058 DOI: 10.1007/s13197-018-03567-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 08/25/2018] [Accepted: 12/26/2018] [Indexed: 10/27/2022]
Abstract
The aim of this study was to analyze the equilibrium and dynamic periods for mass transfer during the antioxidant solid-liquid extraction of dry roselle flower (Hibiscus sabdariffa). Extraction kinetics for total phenolic compounds (TPC), total flavonoids (TFL) and total antioxidant capacity (TAC) were obtained at different temperatures (50, 60, 70 or 80 °C) and solvent-to-product mass ratios (100:1, 200:1 or 300:1 g/g) under stirring (220-230 rpm). An analytical solution for unsteady-state mass transfer based on Fick's second law of diffusion was used to mathematically describe solid-liquid extraction curves and for the simultaneous estimation of diffusion coefficients and the final amount of extracted bioactive compounds, which were further related to experimental conditions by a second order model. The amount of extracted bioactive compounds at equilibrium were in the ranges of 30.8-89.8 g GAE/kg d.m. for TPC (0.154-0.373 g GAE/L extract), 40.0-131.6 g catechin/kg d.m. for TFC (0.269-0.559 g catechin/L extract) and 37.5-227.0 g trolox/kg d.m. for TAC (0.346-0.865 g trolox/L extract). On the other hand, diffusion coefficients for TPC, TFC and TAC were in the ranges of 0.72-2.66 × 10-11, 0.25-2.37 × 10-11 and 1.19-5.79 × 10-11 m2/s, respectively.
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89
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Abdin M, Hamed YS, Akhtar HMS, Chen D, Mukhtar S, Wan P, Riaz A, Zeng X. Extraction optimisation, antioxidant activity and inhibition on α‐amylase and pancreatic lipase of polyphenols from the seeds of
Syzygium cumini. Int J Food Sci Technol 2019. [DOI: 10.1111/ijfs.14112] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Mohamed Abdin
- College of Food Science and Technology Nanjing Agricultural University Nanjing China
- Agriculture Research Center Food Technology Research Institute Giza Egypt
| | - Yahya Saud Hamed
- College of Food Science and Technology Nanjing Agricultural University Nanjing China
| | | | - Dan Chen
- College of Food Science and Technology Nanjing Agricultural University Nanjing China
| | - Shanza Mukhtar
- College of Food Science and Technology Nanjing Agricultural University Nanjing China
| | - Peng Wan
- College of Food Science and Technology Nanjing Agricultural University Nanjing China
| | - Asad Riaz
- College of Food Science and Technology Nanjing Agricultural University Nanjing China
| | - Xiaoxiong Zeng
- College of Food Science and Technology Nanjing Agricultural University Nanjing China
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90
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Antioxidant potential of Hippophae rhamnoides L. extracts obtained with green extraction technique. HERBA POLONICA 2019. [DOI: 10.2478/hepo-2018-0022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Summary
Introduction: Antioxidants, isolated from different plant parts, are widely used due to their ability to prevent the development of so-called oxidative stress. Sea buckthorn (Hippophae rhamnoides L.) is one of the plants with expected antioxidant properties.
Objective: The aim of the study was to evaluate the antioxidant activity of ethanolic, methanolic and acetonic extracts of H. rhamnoides leaves, ripe and unripe fruits obtained by ultrasound-assisted extraction.
Methods: To estimate the antioxidant potential of the extracts the DPPH, FRAP, ABTS and Folin-Ciocalteu methods were applied. Moreover, the influence of the extrahent, as well as extraction time, on this activity was evaluated.
Results: Sea buckthorn leaf extracts showed higher activity, contrary to the fruit extracts. Moreover, higher activity of ripe fruit extracts compared to unripe material extracts was found. To obtain the highest content of antioxidants in the extracts, ultrasound-assisted extraction for 60 min with methanol should be applied.
Conclusions: The presented in vitro results could lead to the conclusion that H. rhamnoides seems to be a valuable source of antioxidants to be applied in various branches of industry.
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91
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Martínez-Patiño JC, Gullón B, Romero I, Ruiz E, Brnčić M, Žlabur JŠ, Castro E. Optimization of ultrasound-assisted extraction of biomass from olive trees using response surface methodology. ULTRASONICS SONOCHEMISTRY 2019; 51:487-495. [PMID: 29880395 DOI: 10.1016/j.ultsonch.2018.05.031] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 05/24/2018] [Accepted: 05/25/2018] [Indexed: 05/14/2023]
Abstract
Olive tree pruning biomass (OTP) and olive mill leaves (OML) are the main residual lignocellulosic biomasses that are generated from olive trees. They have been proposed as a source of value-added compounds and biofuels within the biorefinery concept. In this work, the optimization of an ultrasound-assisted extraction (UAE) process was performed to extract antioxidant compounds present in OTP and OML. The effect of the three parameters, ethanol/water ratio (20, 50, 80% of ethanol concentration), amplitude percentage (30, 50, 70%) and ultrasonication time (5, 10, 15 min), on the responses of total phenolic content (TPC), total flavonoid content (TFC) and antioxidant activities (DPPH, ABTS and FRAP) were evaluated following a Box-Behnken experimental design. The optimal conditions obtained from the model, taking into account simultaneously the five responses, were quite similar for OTP and OML, with 70% amplitude and 15 min for both biomasses and a slight difference in the optimum concentration of ethanol. (54.5% versus 51.3% for OTP and OML, respectively). When comparing the antioxidant activities obtained with OTP and OML, higher values were obtained for OML (around 40% more than for OTP). The antioxidant activities reached experimentally under the optimized conditions were 31.6 mg of TE/g of OTP and 42.5 mg of TE/g of OML with the DPPH method, 66.5 mg of TE/g of OTP and 95.9 mg of TE/g of OML with the ABTS method, and 36.4 mg of TE/g of OTP and 49.7 mg of TE/g of OML with the FRAP method. Both OTP and OML could be a potential source of natural antioxidants.
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Affiliation(s)
- José Carlos Martínez-Patiño
- Department of Chemical, Environmental and Materials Engineering, Universidad de Jaén, Campus Las Lagunillas, 23071 Jaén, Spain
| | - Beatriz Gullón
- Department of Chemical Engineering, Institute of Technology, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Inmaculada Romero
- Department of Chemical, Environmental and Materials Engineering, Universidad de Jaén, Campus Las Lagunillas, 23071 Jaén, Spain
| | - Encarnación Ruiz
- Department of Chemical, Environmental and Materials Engineering, Universidad de Jaén, Campus Las Lagunillas, 23071 Jaén, Spain.
| | - Mladen Brnčić
- Department of Process Engineering, Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, HR-10000 Zagreb, Croatia
| | - Jana Šic Žlabur
- Faculty of Agriculture, University of Zagreb, Svetošimunska cesta 25, Zagreb, Croatia
| | - Eulogio Castro
- Department of Chemical, Environmental and Materials Engineering, Universidad de Jaén, Campus Las Lagunillas, 23071 Jaén, Spain
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92
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Arruda C, Mejía JAA, Pena Ribeiro V, Costa Oliveira L, E Silva MLA, Bastos JK. Development of a Validated High-Performance Liquid Chromatography Method and Optimization of the Extraction of Lignans from Piper cubeba. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:753-759. [PMID: 30583698 DOI: 10.1021/acs.jafc.8b05359] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Piper cubeba L. f. is a food seasoning, which contains secondary metabolites displaying several biological properties, such as cytotoxic, anti-inflammatory, and antiparasitic activities. The lignans (+)-dihydroclusin, (-)-clusin, (-)-cubebin, (-)-yatein, and (-)-haplomyrfolin were isolated, with (-)-haplomyrfolin reported for the first time in P. cubeba seeds. Chromatographic standards were used to develop a reliable reverse-phase high-performance liquid chromatography analytical method according to the Agência Nacional de Vigilância Sanitária and International Conference on Harmonization guidelines to quantitate these lignans in both P. cubeba seeds and their extracts. The extraction of the lignans was also optimized, with the best conditions being ultrasound-assisted extraction, with 84% aqueous ethanol for 38 min in a single extraction. This procedure allows for the extraction of more than 80% of the total lignans, which is better in comparison to other techniques, such as maceration and Soxhlet extraction.
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Affiliation(s)
- Caroline Arruda
- School of Pharmaceutical Sciences of Ribeirão Preto , University of São Paulo , Avenida do Café s/n , Ribeirão Preto , São Paulo 14040-930 , Brazil
| | - Jennyfer Andrea Aldana Mejía
- School of Pharmaceutical Sciences of Ribeirão Preto , University of São Paulo , Avenida do Café s/n , Ribeirão Preto , São Paulo 14040-930 , Brazil
| | - Victor Pena Ribeiro
- School of Pharmaceutical Sciences of Ribeirão Preto , University of São Paulo , Avenida do Café s/n , Ribeirão Preto , São Paulo 14040-930 , Brazil
| | - Larissa Costa Oliveira
- Grupo de Pesquisas em Produtos Naturais, Núcleo de Ciências Exatas e Tecnológicas , Universidade de Franca , Avenida Dr. Armando Salles de Oliveira, 2001 , Franca , São Paulo 14404-600 , Brazil
| | - Márcio Luis Andrade E Silva
- Grupo de Pesquisas em Produtos Naturais, Núcleo de Ciências Exatas e Tecnológicas , Universidade de Franca , Avenida Dr. Armando Salles de Oliveira, 2001 , Franca , São Paulo 14404-600 , Brazil
| | - Jairo Kenupp Bastos
- School of Pharmaceutical Sciences of Ribeirão Preto , University of São Paulo , Avenida do Café s/n , Ribeirão Preto , São Paulo 14040-930 , Brazil
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93
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Jiang Y, Li D, Ma X, Jiang F, He Q, Qiu S, Li Y, Wang G. Ionic Liquid⁻Ultrasound-Based Extraction of Biflavonoids from Selaginella helvetica and Investigation of Their Antioxidant Activity. Molecules 2018; 23:E3284. [PMID: 30544984 PMCID: PMC6321469 DOI: 10.3390/molecules23123284] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 12/03/2018] [Accepted: 12/08/2018] [Indexed: 12/23/2022] Open
Abstract
As a new and green solvent, ionic liquids (ILs) have received more attention during the green extraction and separation process for natural medicines. In this paper, IL-ultrasound-assisted extraction (IL-UAE) of total biflavonoids (TBFs) from Selaginella helvetica was firstly developed, and different ILs were employed and compared. Based on single-factor experiment, solid⁻liquid ratio (1:10⁻1:14 g/mL), IL concentration (0.6⁻1.0 mmol/mL), and extract temperature (40⁻60 °C) were further explored, according to response surface methodology (RSM), with TBF yields as the index. Moreover, antioxidant activity of TBF extract was analyzed by four methods, i.e., 2,2-di(4-tert-octylphenyl)-1-picrylhydrazyl (DPPH) and 2,2'-azinobis-(3-ethylbenzth-iazoline-6-sulphonate (ABTS) free radical scavenging assay, ferric ion reducing power assay, and chelation of ferrous ions assay. The results indicated that [C₆mim]PF₆ had a high selectivity and efficiency. Moreover, important parameters for the extraction process were investigated and optimized. Through parameter optimization (0.8 mmol/L, 250 W, 40 min, 1:12.7 g/mL, and 47 °C), a yield of 18.69 mg/g biflavonoids was obtained from the extract of S. helvetica. Compared with ethanol-UAE, heat-reflux extraction, Soxhlet extraction, and percolation extraction, IL-UAE could not only obtain higher yield in a shorter time, but also reduce the solvent consumption. In addition, TBF extract showed potential antioxidant activity based on the above four antioxidant methods. In short, IL-UAE was first employed to develop a novel and green extraction method for TBF content, and this experiment provides valuable references for further utilization of S. helvetica.
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Affiliation(s)
- Yongmei Jiang
- School of Pharmacy, Zunyi Medical University, Zunyi 563003, China.
| | - Dan Li
- School of Pharmacy, Zunyi Medical University, Zunyi 563003, China.
| | - Xiankui Ma
- School of Pharmacy, Zunyi Medical University, Zunyi 563003, China.
| | - Fengqin Jiang
- School of Pharmacy, Zunyi Medical University, Zunyi 563003, China.
| | - Qun He
- School of Pharmacy, Zunyi Medical University, Zunyi 563003, China.
| | - Shaoliang Qiu
- School of Pharmacy, Zunyi Medical University, Zunyi 563003, China.
| | - Yan Li
- School of Pharmacy, Zunyi Medical University, Zunyi 563003, China.
| | - Gang Wang
- School of Pharmacy, Zunyi Medical University, Zunyi 563003, China.
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94
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Ana CC, Jesús PV, Hugo EA, Teresa AT, Ulises GC, Neith P. Antioxidant capacity and UPLC-PDA ESI-MS polyphenolic profile of Citrus aurantium extracts obtained by ultrasound assisted extraction. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2018; 55:5106-5114. [PMID: 30483007 PMCID: PMC6233436 DOI: 10.1007/s13197-018-3451-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 09/21/2018] [Accepted: 10/02/2018] [Indexed: 10/28/2022]
Abstract
This study aimed to evaluate different pre-treatments and solvent ratios on the total phenolic content and antioxidant activity of Citrus aurantium (sour orange) peel extracted by ultrasound. A two-factor (2 × 3) factorial design was implemented, with fresh and dry peels as pre-treatment conditions, and water (100%), 50% aqueous ethanol (v/v) and 96% aqueous ethanol (v/v) as the solvents. The phenolic compounds were identified and quantified by ultra-performance liquid chromatography-photodiode array and electrospray ionisation-mass spectrometry, respectively. The compounds were partially purified by advanced automated flash purification. The results indicated that the maximal phenolic content (40.95 ± 3.44 mg gallic acid equivalents/g dry weight) was obtained when fresh sour orange peels were extracted with 50% (v/v) aqueous ethanol while the maximal antioxidant activity (730.04 ± 28.60 μmol Trolox equivalents/g dry weight) was achieved from aqueous extraction of dry sour orange peels. Nine phenolic compounds were identified and quantified. Naringin and neohesperidin predominated in sour peel extracts, whereas, caffeic and chlorogenic acids were the least abundant. Evaluation of the antioxidant activity in the fractions suggested that this activity might be attributed to the synergistic effect of the nine phenolic compounds present in the crude extract. Accordingly, sour orange peel is a potential source of phenolic compounds with antioxidant activity.
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Affiliation(s)
- Covarrubias-Cárdenas Ana
- Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco Unidad Sureste (CIATEJ), 97070 Mérida, Mexico
| | - Patrón-Vázquez Jesús
- Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco Unidad Sureste (CIATEJ), 97070 Mérida, Mexico
| | | | - Ayora-Talavera Teresa
- Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco Unidad Sureste (CIATEJ), 97070 Mérida, Mexico
| | - García-Cruz Ulises
- Departamento de Recursos del Mar, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional, Mérida, Mexico
| | - Pacheco Neith
- Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco Unidad Sureste (CIATEJ), 97070 Mérida, Mexico
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95
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Extraction and incorporation of bioactives into protein formulations for food and biomedical applications. Int J Biol Macromol 2018; 120:2094-2105. [DOI: 10.1016/j.ijbiomac.2018.09.030] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 08/26/2018] [Accepted: 09/05/2018] [Indexed: 12/15/2022]
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96
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Elez Garofulić I, Zorić Z, Pedisić S, Brnčić M, Dragović-Uzelac V. UPLC-MS 2 Profiling of Blackthorn Flower Polyphenols Isolated by Ultrasound-Assisted Extraction. J Food Sci 2018; 83:2782-2789. [PMID: 30334249 DOI: 10.1111/1750-3841.14368] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 08/30/2018] [Accepted: 09/10/2018] [Indexed: 01/25/2023]
Abstract
Ultrasound-assisted extraction (UAE) was optimized for fast and effective isolation of blackthorn flower polyphenols. The effects of ethanol concentration (50% and 70%) in extraction solvent, ultrasound amplitude (50%, 75%, and 100%) and extraction time (3, 6, and 9 min) were evaluated. UPLC-MS2 was used to determine phenolic profile of blackthorn flowers extracts. A total of 28 different phenolic compounds were identified, belonging to the classes of hydroxycinnamic acids, flavonol glycosides and flavanols. Kaempferol and quercetin derivatives were the most abundant compounds represented by kaempferol-pentoside and rhamnoside in concentrations up to 494.94 and 436.62 mg/100 g and quercetin-pentoside in concentration up to 226.75 mg/100 g. Observed parameters of UAE did not affect the qualitative phenolic composition of blackthorn flower extracts. On the contrary, the concentration of polyphenols increased with higher ethanol concentration in solvent, higher ultrasound amplitude and prolongation of extraction time. The established conditions for optimal extraction of blackthorn flower polyphenols using ultrasound were: 70% ethanol as extraction solvent, 75% of ultrasound amplitude and 9 min extraction time, resulting in extract rich in polyphenols with a great potential for use in pharmaceutical and food industry. PRACTICAL APPLICATION: In this study, ultrasound-assisted extraction (UAE) was optimized in order to establish fast and effective method for production of crude blackthorn flower extract rich in polyphenols. UPLC-MS2 analysis showed 28 different phenolic compounds belonging to the classes of hydroxycinnamic acids, flavonol glycosides, and flavanols with quercetin and kaempferol glycosides in the highest concentrations, implicating high potential of blackthorn flowers' extract for use in food and pharmaceutical industries.
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Affiliation(s)
- Ivona Elez Garofulić
- the Faculty of Food Technology and Biotechnology, Univ. of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia
| | - Zoran Zorić
- the Faculty of Food Technology and Biotechnology, Univ. of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia
| | - Sandra Pedisić
- the Faculty of Food Technology and Biotechnology, Univ. of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia
| | - Mladen Brnčić
- the Faculty of Food Technology and Biotechnology, Univ. of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia
| | - Verica Dragović-Uzelac
- the Faculty of Food Technology and Biotechnology, Univ. of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia
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97
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Xie P, Huang L, Zhang C, Deng Y, Wang X, Cheng J. Enhanced extraction of hydroxytyrosol, maslinic acid and oleanolic acid from olive pomace: Process parameters, kinetics and thermodynamics, and greenness assessment. Food Chem 2018; 276:662-674. [PMID: 30409646 DOI: 10.1016/j.foodchem.2018.10.079] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 10/08/2018] [Accepted: 10/15/2018] [Indexed: 01/12/2023]
Abstract
Three techniques of ultrasound-assisted extraction (UAE), microwave-assisted extraction (MAE) and solvent extraction (SE) were used for enhancing the hydroxytyrosol (HT), maslinic acid (MA) and oleanolic acid (OA) extraction from olive pomace, being evaluated and compared through process parameters, kinetics and thermodynamics, plus greenness assessment analysis. Results showed that UAE yielded the maximum compounds due to a strong cavitation effect and the strongest mass and heat transfer efficiency involving the kinetic constants (h, Ce and K) and thermodynamic parameters (△H, △S and △G). Additionally, the optimal extraction conditions were acquired: ethanol concentration of 90%, extraction temperature of 50 °C, extraction time of 5 min, liquid to solid ratio of 30 mL/g, ultrasound intensity of 135.6 W/cm2, and ultrasound frequency of 60 kHz. UAE was confirmed as an effective and greener technique with the lowest E factor, energy consumption and carbon emission during the extraction process of bioactive compounds from olive pomace.
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Affiliation(s)
- Pujun Xie
- Institute of Chemical Industry of Forest Products, CAF, National Engineering Laboratory for Biomass Chemical Utilization, Key and Open Laboratory on Forest Chemical Engineering, SFA, Key Laboratory of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China; Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Lixin Huang
- Institute of Chemical Industry of Forest Products, CAF, National Engineering Laboratory for Biomass Chemical Utilization, Key and Open Laboratory on Forest Chemical Engineering, SFA, Key Laboratory of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China; Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China.
| | - Caihong Zhang
- Institute of Chemical Industry of Forest Products, CAF, National Engineering Laboratory for Biomass Chemical Utilization, Key and Open Laboratory on Forest Chemical Engineering, SFA, Key Laboratory of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China; Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Yejun Deng
- Institute of Chemical Industry of Forest Products, CAF, National Engineering Laboratory for Biomass Chemical Utilization, Key and Open Laboratory on Forest Chemical Engineering, SFA, Key Laboratory of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
| | - Xiaojie Wang
- Institute of Chemical Industry of Forest Products, CAF, National Engineering Laboratory for Biomass Chemical Utilization, Key and Open Laboratory on Forest Chemical Engineering, SFA, Key Laboratory of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
| | - Jiang Cheng
- Institute of Chemical Industry of Forest Products, CAF, National Engineering Laboratory for Biomass Chemical Utilization, Key and Open Laboratory on Forest Chemical Engineering, SFA, Key Laboratory of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
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98
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Zhao CN, Zhang JJ, Li Y, Meng X, Li HB. Microwave-Assisted Extraction of Phenolic Compounds from Melastoma sanguineum Fruit: Optimization and Identification. Molecules 2018; 23:molecules23102498. [PMID: 30274261 PMCID: PMC6222716 DOI: 10.3390/molecules23102498] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 09/18/2018] [Accepted: 09/27/2018] [Indexed: 12/25/2022] Open
Abstract
A microwave-assisted extraction (MAE) technology optimized by response surface methodology (RSM) was established to extract phenolic compounds from the fruit of Melastoma sanguineum. The effects of solvent composition, ratio of solvent to material, temperature, time and microwave power on phenol yield were evaluated in single-factor tests. The three parameters exerting main impacts on phenol yield were further optimized by RSM. Under optimal extraction conditions (31.33% ethanol, solvent/material ratio of 32.21 mL/g, 52.24 °C, 45 min and 500 W), the total phenolic content was 39.02 ± 0.73 mg gallic acid equivalent (GAE)/g dry weight (DW). This MAE method performed better in comparison with two conventional methods, those being maceration (25.79 ± 1.03 mg GAE/g DW) and Soxhlet extraction (18.40 ± 1.34 mg GAE/g DW), using lower process temperature, shorter irradiation time, and lower organic solvent consumption. In addition, five flavonoids (epicatechin gallate, epicatechin, rutin, pigallocatechin and quercetin) and two phenolic acids (protocatechuic acid and chlorogenic acid) in the extract were identified and quantified using UPLC-MS/MS.
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Affiliation(s)
- Cai-Ning Zhao
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangdong Engineering Technology Research Center of Nutrition Translation, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
| | - Jiao-Jiao Zhang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangdong Engineering Technology Research Center of Nutrition Translation, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
| | - Ya Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangdong Engineering Technology Research Center of Nutrition Translation, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
| | - Xiao Meng
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangdong Engineering Technology Research Center of Nutrition Translation, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
| | - Hua-Bin Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Guangdong Engineering Technology Research Center of Nutrition Translation, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
- South China Sea Bioresource Exploitation and Utilization Collaborative Innovation Center, Sun Yat-Sen University, Guangzhou 510006, China.
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99
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Chen B, Liu Z, Qu D, Wang Y, Huo X, Li Z, Sun Y. Optimized extraction of secoiridoid glycosides from Gentianae radix
by pressurized liquid extraction using a Box-Behnken Design. SEPARATION SCIENCE PLUS 2018. [DOI: 10.1002/sscp.201800060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Bao Chen
- Institute of Special Animal and Plant Sciences; Chinese Academy of Agricultural Sciences; Jilin P. R. China
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy; Ocean University of China; Qingdao P. R. China
| | - Zhengbo Liu
- Institute of Special Animal and Plant Sciences; Chinese Academy of Agricultural Sciences; Jilin P. R. China
| | - Di Qu
- Institute of Special Animal and Plant Sciences; Chinese Academy of Agricultural Sciences; Jilin P. R. China
| | - Yufang Wang
- Institute of Special Animal and Plant Sciences; Chinese Academy of Agricultural Sciences; Jilin P. R. China
| | - Xiaohui Huo
- Institute of Special Animal and Plant Sciences; Chinese Academy of Agricultural Sciences; Jilin P. R. China
| | - Zhiman Li
- Institute of Special Animal and Plant Sciences; Chinese Academy of Agricultural Sciences; Jilin P. R. China
| | - Yinshi Sun
- Institute of Special Animal and Plant Sciences; Chinese Academy of Agricultural Sciences; Jilin P. R. China
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100
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Yang Y, Cao T, Xiong Y, Huang G, Wang W, Liu Q, Xu S. Oil removal from spent HDT catalyst by an aqueous method with assistance of ultrasound. WASTE MANAGEMENT (NEW YORK, N.Y.) 2018; 78:595-601. [PMID: 32559950 DOI: 10.1016/j.wasman.2018.05.055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 05/14/2018] [Accepted: 05/30/2018] [Indexed: 06/11/2023]
Abstract
Deoiling enjoys great significance in recycling and landfill of spent hydrotreating (HDT) catalyst. In this study, a novel approach for oil removal from spent HDT catalyst with assistance of ultrasound was developed. The effects of variables on oil removal were investigated by response surface methodology and central composite design method. The oil removal efficiency reaches 96.03 ± 0.82% under the optimum conditions of liquid-solid ratio 16.00 ml·g-1, 75 °C, sodium hydroxide dosage 3.88 wt%, and 40 kHz ultrasonic irradiation for 3.25 h. Under the optimum conditions, the contact angle of spent catalyst is 98.7° before oil removal, and then reduces to 57.2° after deoiling with the help of ultrasound, but turns to 72° after deoiling in the absence of ultrasound, which further verifies that the oil removal efficiency can be improved by ultrasound. Compared to traditional extraction or hydrothermal methods for removing oil from spent catalyst, the proposed approach introduced ultrasonic force field to enhance oil removal efficiency without adding organic solvent or surfactant.
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Affiliation(s)
- Yue Yang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Tiantian Cao
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Yong Xiong
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - GuoYong Huang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Wenqiang Wang
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China.
| | - Qi Liu
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
| | - Shengming Xu
- Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China.
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