101
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An K, Zhao D, Wang Z, Wu J, Xu Y, Xiao G. Comparison of different drying methods on Chinese ginger (Zingiber officinale Roscoe): Changes in volatiles, chemical profile, antioxidant properties, and microstructure. Food Chem 2016; 197 Pt B:1292-300. [PMID: 26675871 DOI: 10.1016/j.foodchem.2015.11.033] [Citation(s) in RCA: 219] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 11/04/2015] [Accepted: 11/06/2015] [Indexed: 11/17/2022]
Abstract
Nowadays, food industry is facing challenges in preserving better quality of fruit and vegetable products after processing. Recently, many attentions have been drawn to ginger rhizome processing due to its numerous health promoting properties. In our study, ginger rhizome slices were subjected to air-drying (AD), freeze drying (FD), infrared drying (IR), microwave drying (MD) and intermittent microwave & convective drying (IM&CD). Quality attributes of the dried samples were compared in terms of volatile compounds, 6, 8, 10-gingerols, 6-shogaol, antioxidant activities and microstructure. Results showed that AD and IR were good drying methods to preserve volatiles. FD, IR and IM&CD led to higher retention of gingerols, TPC, TFC and better antioxidant activities. However, FD and IR had relative high energy consumption and drying time. Therefore, considering about the quality retention and energy consumption, IM&CD would be very promising for thermo sensitive material.
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Affiliation(s)
- Kejing An
- Sericulture and Agri-Food Research Institute Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou 510610, PR China
| | - Dandan Zhao
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China; National Engineering and Technology Research Center for Fruits and Vegetable Processing, PR China
| | - Zhengfu Wang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China; National Engineering and Technology Research Center for Fruits and Vegetable Processing, PR China
| | - Jijun Wu
- Sericulture and Agri-Food Research Institute Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou 510610, PR China
| | - Yujuan Xu
- Sericulture and Agri-Food Research Institute Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou 510610, PR China
| | - Gengsheng Xiao
- Sericulture and Agri-Food Research Institute Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou 510610, PR China.
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102
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Michalska A, Wojdyło A, Lech K, Łysiak GP, Figiel A. Physicochemical properties of whole fruit plum powders obtained using different drying technologies. Food Chem 2016; 207:223-32. [PMID: 27080900 DOI: 10.1016/j.foodchem.2016.03.075] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 03/20/2016] [Accepted: 03/22/2016] [Indexed: 11/16/2022]
Abstract
Physicochemical quality parameters of plum powders obtained by applying conventional drying methods and their combination devised to process plums were evaluated. The effect of freeze-drying (FD), vacuum drying (VD), convective drying (CD), microwave-vacuum drying (MVD) and combination of convective pre-drying and microwave finish-drying (CPD-MVFD) affected physical (bulk density, porosity, colour, solubility) and chemical (polyphenolic compounds determined by UPLC and antioxidant capacity by TEAC ABTS and FRAP methods) properties of plum powders. The MVD at 1.2 W g(-1) and a novel combination for plum powders production - CPD-MVFD at 70 °C/1.2 W g(-1) allowed the best preservation of phenolic compounds and increased the efficiency of production. Results obtained support the use of MVD and its combination for better quality of dried plum products. The study proved that the determination of the browning index and HMF level (formed via Maillard reaction) might be good tool for monitoring the thermal processing of plum powders.
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Affiliation(s)
- Anna Michalska
- Institute of Agricultural Engineering, Wrocław University of Environmental and Life Sciences, ul. Chełmońskiego 37a, Wrocław 51-630, Poland; Institute of Animal Reproduction and Food Research of the Polish Academy of Science, ul. Tuwima 10, Olsztyn 10-748, Poland.
| | - Aneta Wojdyło
- Department of Fruit, Vegetable and Cereals Technology, Wrocław University of Environmental and Life Sciences, ul. Chełmońskiego 37, Wrocław 51-630, Poland.
| | - Krzysztof Lech
- Institute of Agricultural Engineering, Wrocław University of Environmental and Life Sciences, ul. Chełmońskiego 37a, Wrocław 51-630, Poland.
| | - Grzegorz P Łysiak
- Poznan University of Life Sciences, ul. Dabrowskiego 159, Poznan 60-594, Poland.
| | - Adam Figiel
- Institute of Agricultural Engineering, Wrocław University of Environmental and Life Sciences, ul. Chełmońskiego 37a, Wrocław 51-630, Poland.
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103
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Roshanak S, Rahimmalek M, Goli SAH. Evaluation of seven different drying treatments in respect to total flavonoid, phenolic, vitamin C content, chlorophyll, antioxidant activity and color of green tea (Camellia sinensis or C. assamica) leaves. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2016; 53:721-9. [PMID: 26787992 PMCID: PMC4711456 DOI: 10.1007/s13197-015-2030-x] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 08/28/2015] [Accepted: 09/08/2015] [Indexed: 10/23/2022]
Abstract
The effect of seven drying treatments (sun, shade, oven 60 °C, oven 80 °C, oven 100 °C, microwave and freeze-drying) were evaluated with respect total flavonoid (TFC), phenolic (TPC), antioxidant activity, vitamin C and color characteristics of green tea. In general, drying increased antioxidant activity, TPC, TFC and chlorophyll content, while it led to a decrease in vitamin C. The highest TPC (209.17 mg Gallic acid/gdw) and TFC (38.18 mg Quercitin/gdw) were obtained in oven drying at 60 and 100 °C, respectively. Among methods, oven drying at 60 °C revealed the highest radical scavenging activity (IC50 = 167.166 μg/ml), while microwave showed the lowest one (IC50 = 505.5 μg/ml). Similar trend was also observed in reducing power assay. The highest vitamin C (16.36 mg/100gDM) and Chlorophyll a (17.35 mg/l) were obtained in freeze drying. Finally, sun and freeze drying methods were considered as the least and the most desirable drying methods, respectively the final color of green tea leaves.
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Affiliation(s)
- Sahar Roshanak
- />Department of Food Science, College of Agriculture, Isfahan University of Technology, Isfahan, 84156 83111 Iran
| | - Mehdi Rahimmalek
- />Department of Agronomy and Plant breeding, College of Agriculture, Isfahan University of Technology, Isfahan, 84156 83111 Iran
| | - Sayed Amir Hossein Goli
- />Department of Food Science, College of Agriculture, Isfahan University of Technology, Isfahan, 84156 83111 Iran
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104
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Markin VI, Cheprasova MY, Bazarnova NG. General areas of the use of a microwave radiation for processing of plant raw materials (review). RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2015. [DOI: 10.1134/s1068162015070110] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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105
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Değirmencioğlu N, Gürbüz O, Herken EN, Yıldız AY. The impact of drying techniques on phenolic compound, total phenolic content and antioxidant capacity of oat flour tarhana. Food Chem 2015; 194:587-94. [PMID: 26471596 DOI: 10.1016/j.foodchem.2015.08.065] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 08/12/2015] [Accepted: 08/18/2015] [Indexed: 01/22/2023]
Abstract
In this study, the changes in phenolic composition, total phenolic content, and antioxidant capacity of tarhanas supplemented with oat flour (OF) at the levels of 20-100% (w/w) after three drying treatments (sun-, oven-, and microwave drying) were investigated. A total of seventeen phenolic standards have been screened in tarhanas, and the most abundant flavonol and phenolic acid compounds were kaempferol (23.62mg/g) and 3-hydroxy-4-metoxy cinnamic acid (9.60mg/g). The total phenolic content amount gradually increased with the addition of OF to tarhana, but decidedly higher total phenolic content was found in samples oven dried at 55°C as compared with other methods. The microwave- and oven dried tarhana samples showed higher TEACDPPH and TEACABTS values than those dried with the other methods, respectively, in higher OF amounts. Consequently, oven- and microwave-drying can be recommended to retain the highest for phenolic compounds as well as maximal antioxidant capacity in OF supplemented tarhana samples.
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Affiliation(s)
- Nurcan Değirmencioğlu
- Department of Food Technology, Bandırma Vocational High School, Bandırma Onyedi Eylül University, Balıkesir, Turkey.
| | - Ozan Gürbüz
- Department of Food Engineering, Agricultural Faculty, Uludag University, Bursa, Turkey.
| | - Emine Nur Herken
- Department of Food Engineering, Engineering Faculty, Pamukkale University, Denizli, Turkey.
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106
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Study of the effect of extract of Thymus vulgaris on anxiety in male rats. J Tradit Complement Med 2015; 6:257-61. [PMID: 27419090 PMCID: PMC4936652 DOI: 10.1016/j.jtcme.2015.01.001] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 11/16/2014] [Accepted: 01/04/2015] [Indexed: 11/22/2022] Open
Abstract
There is some evidence in traditional medicine for the effectiveness of Thymus vulgaris (百里香 bǎi lǐ xiāng) in the treatment of anxiety in humans. The elevated plus-maze (EPM) has broadly been used to investigate anxiolytic and anxiogenic compounds. The present study investigated the effects of extract of T. vulgaris on rat behavior in the EPM. In the present study, the data were obtained from male Wistar rats. Animals were divided into four groups: saline group and T. vulgaris groups (50 mg/kg, 100 mg/kg, and 200 mg/kg infusion for 7 days by feeding). During the test period, the total distance covered by animals, the number of open- and closed-arm entries, and the time spent in open and closed arms of the EPM were recorded. T. vulgaris increased open-arm exploration and open-arm entry in the EPM, whereas extract of this plant has no effects on the total distance covered by animals and the number of closed-arm entries. The results of the present experiment indicate that T. vulgaris may have an anxiolytic profile in rat behavior in the EPM test, which is not influenced by the locomotor activity. Further research is required to determine the mechanisms by which T. vulgaris extract exerts an anxiolytic effect in rats.
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107
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Orphanides A, Goulas V, Gekas V. Drying Technologies: Vehicle to High-Quality Herbs. FOOD ENGINEERING REVIEWS 2015. [DOI: 10.1007/s12393-015-9128-9] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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108
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Oroian M, Escriche I. Antioxidants: Characterization, natural sources, extraction and analysis. Food Res Int 2015; 74:10-36. [PMID: 28411973 DOI: 10.1016/j.foodres.2015.04.018] [Citation(s) in RCA: 265] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Revised: 04/03/2015] [Accepted: 04/12/2015] [Indexed: 12/18/2022]
Abstract
Recently many review papers regarding antioxidants from different sources and different extraction and quantification procedures have been published. However none of them has all the information regarding antioxidants (chemistry, sources, extraction and quantification). This article tries to take a different perspective on antioxidants for the new researcher involved in this field. Antioxidants from fruit, vegetables and beverages play an important role in human health, for example preventing cancer and cardiovascular diseases, and lowering the incidence of different diseases. In this paper the main classes of antioxidants are presented: vitamins, carotenoids and polyphenols. Recently, many analytical methodologies involving diverse instrumental techniques have been developed for the extraction, separation, identification and quantification of these compounds. Antioxidants have been quantified by different researchers using one or more of these methods: in vivo, in vitro, electrochemical, chemiluminescent, electron spin resonance, chromatography, capillary electrophoresis, nuclear magnetic resonance, near infrared spectroscopy and mass spectrometry methods.
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Affiliation(s)
- Mircea Oroian
- Faculty of Food Engineering, Stefan cel Mare University of Suceava, Suceava, Romania.
| | - Isabel Escriche
- Institute of Food Engineering for Development (IUIAD), Food Technology Department (DTA), Universitat Politècnica de València, Valencia, Spain
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109
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Pieme CA, Ngoupayo J, Nkoulou CHKK, Moukette BM, Nono BLN, Moor VJA, Minkande JZ, Ngogang JY. Syzyguim guineense Extracts Show Antioxidant Activities and Beneficial Activities on Oxidative Stress Induced by Ferric Chloride in the Liver Homogenate. Antioxidants (Basel) 2014; 3:618-35. [PMID: 26785075 PMCID: PMC4665412 DOI: 10.3390/antiox3030618] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 08/15/2014] [Accepted: 08/22/2014] [Indexed: 11/17/2022] Open
Abstract
The aim of this study was to determine the in vitro antioxidant activity, free radical scavenging property and the beneficial effects of extracts of various parts of Syzygium guineense in reducing oxidative stress damage in the liver. The effects of extracts on free radicals were determined on radicals DPPH, ABTS, NO and OH followed by the antioxidant properties using Ferric Reducing Antioxidant Power assay (FRAP) and hosphomolybdenum (PPMB). The phytochemical screening of these extracts was performed by determination of the phenolic content. The oxidative damage inhibition in the liver was determined by measuring malondialdehyde (MDA) as well as the activity of the antioxidant enzymes superoxide dismutase (SOD), catalase (CAT) and peroxidase. Overall, the bark extract of the ethanol/water or methanol showed the highest radical scavenging activities against DPPH, ABTS and OH radicals compared to the other extracts. This extract also contained the highest phenolic content implying the potential contribution of phenolic compounds towards the antioxidant activities. However, the methanol extract of the root demonstrated the highest protective effects of SOD and CAT against ferric chloride while the hydro-ethanol extract of the leaves exhibited the highest inhibitory effects on lipid peroxidation. These findings suggest that antioxidant properties of S. guineense extracts could be attributed to phenolic compounds revealed by phytochemical studies. Thus, the present results indicate clearly that the extracts of S. guineense possess antioxidant properties and could serve as free radical inhibitors or scavengers, acting possibly as primary antioxidants. The antioxidant properties of the bark extract may thus sustain its various biological activities.
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Affiliation(s)
- Constant Anatole Pieme
- Laboratory of Biochemistry, Department of Biochemistry and Physiological Sciences Faculty of Medicine and Biomedical Sciences, University of Yaounde I, P.O. Box 1364 Yaounde, Cameroon.
| | - Joseph Ngoupayo
- Department of pharmacy, Faculty of Medicine and Biomedical Sciences, University of Yaounde I, P.O. Box 1364 Yaounde, Cameroon.
| | - Claude Herve Khou-Kouz Nkoulou
- Department of pharmacy, Faculty of Medicine and Biomedical Sciences, University of Yaounde I, P.O. Box 1364 Yaounde, Cameroon.
| | - Bruno Moukette Moukette
- Laboratory of Biochemistry, Department of Biochemistry and Physiological Sciences Faculty of Medicine and Biomedical Sciences, University of Yaounde I, P.O. Box 1364 Yaounde, Cameroon.
| | | | - Vicky Jocelyne Ama Moor
- Laboratory of Biochemistry, Department of Biochemistry and Physiological Sciences Faculty of Medicine and Biomedical Sciences, University of Yaounde I, P.O. Box 1364 Yaounde, Cameroon.
| | - Jacqueline Ze Minkande
- Department of Anesthesia and Reanimation, Faculty of Medicine and Biomedical Sciences, University of Yaounde I, P.O. Box 1364 Yaounde, Cameroon.
| | - Jeanne Yonkeu Ngogang
- Laboratory of Biochemistry, Department of Biochemistry and Physiological Sciences Faculty of Medicine and Biomedical Sciences, University of Yaounde I, P.O. Box 1364 Yaounde, Cameroon.
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110
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Periche A, Castelló ML, Heredia A, Escriche I. Influence of drying method on steviol glycosides and antioxidants in Stevia rebaudiana leaves. Food Chem 2014; 172:1-6. [PMID: 25442516 DOI: 10.1016/j.foodchem.2014.09.029] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Revised: 09/04/2014] [Accepted: 09/06/2014] [Indexed: 11/29/2022]
Abstract
The application of different drying conditions (hot air drying at 100 °C and 180 °C, freeze drying and shade drying) on steviol glycosides (stevioside, dulcoside A, rebaudioside A and rebaudioside C) and antioxidants in Stevia leaves was evaluated. Stevioside, the major glycoside found in fresh leaves (81.2mg/g), suffered an important reduction in all cases, although shade drying was the least aggressive treatment. Considering the antioxidant parameters (total phenols, flavonoids and total antioxidants), the most suitable drying method was hot air at 180 °C, since it substantially increased all of them (76.8 mg gallic acid, 45.1mg catechin and 126 mg Trolox, all equivalent/g Stevia, respectively), with respect to those present in fresh leaves (44.4, 2.5 and 52.9 mg equivalent/g). Therefore, the ideal method for drying Stevia leaves depends on their final use (sweetener or antioxidant), although, hot air at 180 °C is the most recommendable if only one treatment has to be chosen.
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Affiliation(s)
- Angela Periche
- Institute of Food Engineering for Development, Food Technology Department, Universitat Politècnica de València, P.O. Box 46022, Valencia, Spain
| | - María Luisa Castelló
- Institute of Food Engineering for Development, Food Technology Department, Universitat Politècnica de València, P.O. Box 46022, Valencia, Spain
| | - Ana Heredia
- Institute of Food Engineering for Development, Food Technology Department, Universitat Politècnica de València, P.O. Box 46022, Valencia, Spain
| | - Isabel Escriche
- Institute of Food Engineering for Development, Food Technology Department, Universitat Politècnica de València, P.O. Box 46022, Valencia, Spain.
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111
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Kozics K, Klusová V, Srančíková A, Mučaji P, Slameňová D, Hunáková L, Kusznierewicz B, Horváthová E. Effects of Salvia officinalis and Thymus vulgaris on oxidant-induced DNA damage and antioxidant status in HepG2 cells. Food Chem 2013; 141:2198-206. [PMID: 23870948 DOI: 10.1016/j.foodchem.2013.04.089] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Revised: 04/26/2013] [Accepted: 04/30/2013] [Indexed: 11/24/2022]
Abstract
Salvia officinalis (SO) and Thymus vulgaris (TV) are medicinal plants well known for their curative powers. However, the molecular mechanisms responsible for these abilities of sage and thyme have not been fully understood yet. In this study we investigated the composition and the quantitative estimation of plant extracts, the protective effects of plant extracts against hydrogen peroxide- and 2,3-dimethoxy-1,4-naphthoquinone-induced DNA damage, and levels of enzymatic and non-enzymatic antioxidants (superoxide dismutase, glutathione peroxidase, glutathione) in human HepG2 cells. To measure antioxidative activity of plant extracts we used three assays: 1,1-diphenyl-2-picrylhydrazyl (DPPH), ferric reducing antioxidant power (FRAP) and 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS). The results showed that the oxidant-induced DNA lesions were significantly reduced in cells pre-treated with the plant extracts studied. The observed DNA-protective activity could be explained by both elevation of GPx activity in cells pre-treated with SO and TV and antioxidant activity of SO and TV.
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Affiliation(s)
- Katarína Kozics
- Cancer Research Institute, Slovak Academy of Sciences, Vlárska 7, 833 91 Bratislava, Slovak Republic.
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112
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Chávez-Reyes Y, Dorantes-Alvarez L, Arrieta-Baez D, Osorio-Esquivel O, Ortiz-Moreno A. Polyphenol Oxidase Inactivation by Microwave Oven and Its Effect on Phenolic Profile of Loquat (<i>Eriobotrya japonica</i>) Fruit. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/fns.2013.49a2012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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113
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Antioxidant activities of lead (Leucaena leucocephala) seed as affected by extraction solvent, prior dechlorophyllisation and drying methods. Journal of Food Science and Technology 2012; 51:3026-37. [PMID: 26396295 DOI: 10.1007/s13197-012-0846-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 08/20/2012] [Accepted: 09/03/2012] [Indexed: 01/12/2023]
Abstract
Extracts of brown lead (Leucaena leucocephala) seed prepared using different extraction solvents were determined for antioxidative activities using different assays. The highest yield (3.4-4.0%) was obtained when water was used as an extraction solvent, compared with all ethanolic extracts used (1.2-2.0 %) (P < 0.05). Much lower chlorophyll content was found in the water extract. When hot water was used, the resulting extract contained lower total phenolic and mimosine contents (P < 0.05). In general, 60-80 % ethanolic extracts had higher 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging activities, ferric reducing antioxidant power (FRAP) and metal chelating activity than water extracts (P < 0.05). When brown lead seed was dechlorophyllised prior to extraction, the water extract had slightly increased yield with lower chlorophyll content. Nevertheless, prior chlorophyll removal resulted in the increase in antioxidative activities but lower total phenolic and mimosine contents (P < 0.05). Generally, phenolic compounds and mimosine were more released when water was used as the extraction solvent, while the lower amount of chlorophyll was extracted. Oven-drying exhibited the negative effect on antioxidative activities and mimosine content. The higher antioxidative activities with concomitant higher total phenolic and mimosine contents were found in water extract dried by freeze drying. Thus, extraction solvent, dechlorophyllisation and drying methods directly influenced the yield and antioxidative activity of lead seed extract.
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