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Xia T, Su S, Wang L, Tang Z, Huo J, Song H. Exploring bitter characteristics of blue honeysuckle (Lonicera caerulea L.) berries by sensory-guided analysis: Key bitter compounds and varietal differences. Food Chem 2024; 457:140150. [PMID: 38905837 DOI: 10.1016/j.foodchem.2024.140150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 06/11/2024] [Accepted: 06/16/2024] [Indexed: 06/23/2024]
Abstract
The taste of blue honeysuckle (Lonicera caerulea L.) berries is wrapped in bitterness, and awareness about the essence of bitterness is lacking. In the current study, 7-ketologanin, sweroside and loganin were isolated and identified as key bitter compounds using sensory-guided analysis. The bitterness thresholds of these compounds were determined to be 11.9 μg/mL, 33.5 μg/mL and 60.2 μg/mL. Subsequently, the differences in bitterness among 16 blue honeysuckle varieties were evaluated. The wild varieties A1 and A2 exhibited the highest bitter intensity. 7-Ketologanin, with the highest concentration of 34.70-37.11 mg/100 g and taste activity values of 29.16-31.18 in A1 and A2, was first identified as a bitter contributor in blue honeysuckle. There was no significant difference in bitter intensity between the reconstitution model and the original sample, confirming the contribution of the three bitter compounds. This study lays the foundation for the bitter improvement and variety selection of blue honeysuckle resources.
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Affiliation(s)
- Tianze Xia
- Laboratory of Molecular Sensory Science, School of Food and Health, Beijing Technology and Business University, Beijing 100048, China
| | - Shang Su
- Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Lijin Wang
- Laboratory of Molecular Sensory Science, School of Food and Health, Beijing Technology and Business University, Beijing 100048, China.
| | - Zhongqiu Tang
- Forestry and Agricultural Academy of the Greater Khingan Mountains, Jiagedaqi 165000, China
| | - Junwei Huo
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150006, China
| | - Huanlu Song
- Laboratory of Molecular Sensory Science, School of Food and Health, Beijing Technology and Business University, Beijing 100048, China
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Guo L, Qiao J, Zhang L, Yan W, Zhang M, Lu Y, Wang Y, Ma H, Liu Y, Zhang Y, Li J, Qin D, Huo J. Critical review on anthocyanins in blue honeysuckle (Lonicera caerulea L.) and their function. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 204:108090. [PMID: 37847973 DOI: 10.1016/j.plaphy.2023.108090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 09/27/2023] [Accepted: 10/11/2023] [Indexed: 10/19/2023]
Abstract
Blue honeysuckle (Lonicera caerulea L.) is an emerging commercial fruit in the world, has been known for its multiple anthocyanins in the berries, cyanidin-3-glucoside (C3G) is a major anthocyanin in berries and it makes up 76-92% of the total anthocyanins content, with high antioxidant capacity, and widely used in food products. In this review, recent studies related to anthocyanins in blue honeysuckle were sorted out, including the current status of research on anthocyanins in blue honeysuckle berries, especially C3G, qualitative and quantitative analysis of anthocyanins in berries, extraction and purification methods of anthocyanins from blue honeysuckle, in addition, biological effects of blue honeysuckle, and recommended utilization. Blue honeysuckle contains polyphenols, flavonoids, anthocyanins, minerals, and multiple bioactive compounds, it has been extensively reported to have significant antioxidant, cardioprotective, anti-inflammatory, neuroprotective, anticancer, and anti-diabetic functions, and has been used in a variety of food products as raw materials.
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Affiliation(s)
- Liangchuan Guo
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China; National-Local Joint Engineering Research Center for Development and Utilization of Small Fruits in Cold Regions, National Development and Reform Commission, Harbin, 150030, China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Harbin, 150030, China
| | - Jinli Qiao
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China; National-Local Joint Engineering Research Center for Development and Utilization of Small Fruits in Cold Regions, National Development and Reform Commission, Harbin, 150030, China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Harbin, 150030, China
| | - Lijun Zhang
- National-Local Joint Engineering Research Center for Development and Utilization of Small Fruits in Cold Regions, National Development and Reform Commission, Harbin, 150030, China; Heilongjiang Green Food Science Research Institute, 150023, China
| | - Weijiao Yan
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China; National-Local Joint Engineering Research Center for Development and Utilization of Small Fruits in Cold Regions, National Development and Reform Commission, Harbin, 150030, China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Harbin, 150030, China
| | - Meihui Zhang
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China
| | - Yongchuan Lu
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China
| | - Yutong Wang
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China
| | - Hexi Ma
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China
| | - Yan Liu
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China
| | - Yue Zhang
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China
| | - Jichuan Li
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China
| | - Dong Qin
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China; National-Local Joint Engineering Research Center for Development and Utilization of Small Fruits in Cold Regions, National Development and Reform Commission, Harbin, 150030, China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Harbin, 150030, China.
| | - Junwei Huo
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China; National-Local Joint Engineering Research Center for Development and Utilization of Small Fruits in Cold Regions, National Development and Reform Commission, Harbin, 150030, China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Harbin, 150030, China.
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Zhang B, Niu L, Huang X. Lonicera Caerulea Juice Alleviates Alcoholic Liver Disease by Regulating Intestinal Flora and the FXR-FGF15 Signaling Pathway. Nutrients 2023; 15:4025. [PMID: 37764808 PMCID: PMC10534805 DOI: 10.3390/nu15184025] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 09/11/2023] [Accepted: 09/14/2023] [Indexed: 09/29/2023] Open
Abstract
Alcoholic liver disease (ALD) is a growing public health issue with high financial, social, and medical costs. Lonicera caerulea, which is rich in polyphenolic compounds, has been shown to exert anti-oxidative and anti-inflammatory effects. This study aimed to explore the effects and mechanisms of concentrated Lonicera caerulea juice (LCJ) on ALD in mice. ALD was established in mice via gradient alcohol feeding for 30 days. The mice in the experimental group were given LCJ by gavage. The reduction of aspartate transaminase (AST) and alanine transaminase (ALT) in the serum of mice indicated that LCJ has a liver-protective effect. LCJ improved the expression of AMPK, PPARα, and CPT1b in ALD mice to reduce the liver lipid content. Additionally, LCJ increased the expression of farnesoid X receptor (FXR), fibroblast growth factor 15 (FGF15), and fibroblast growth factor receptor 4 (FGFR4), which lowers the expression of cytochrome P450 7A1 (CYP7A1) and lessens bile acid deposition in the liver. In mice, LCJ improved the intestinal barrier by upregulating the expression of mucins and tight junction proteins in the small intestine. Moreover, it accelerated the restoration of microbial homeostasis in both the large and small intestines and increased short-chain fatty acids in the cecum. In conclusion, LCJ alleviates ALD by reducing liver and serum lipid accumulation and modulating the FXR-FGF15 signaling pathway mediated by gut microbes.
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Negreanu-Pirjol BS, Oprea OC, Negreanu-Pirjol T, Roncea FN, Prelipcean AM, Craciunescu O, Iosageanu A, Artem V, Ranca A, Motelica L, Lepadatu AC, Cosma M, Popoviciu DR. Health Benefits of Antioxidant Bioactive Compounds in the Fruits and Leaves of Lonicera caerulea L. and Aronia melanocarpa (Michx.) Elliot. Antioxidants (Basel) 2023; 12:antiox12040951. [PMID: 37107325 PMCID: PMC10136089 DOI: 10.3390/antiox12040951] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 04/13/2023] [Accepted: 04/15/2023] [Indexed: 04/29/2023] Open
Abstract
Lonicera caerulaea L. and Aronia melanocarpa (Michx.) Elliot fruits are frequently used for their health benefits as they are rich in bioactive compounds. They are recognized as a source of natural and valuable phytonutrients, which makes them a superfood. L. caerulea presents antioxidant activity three to five times higher than other berries which are more commonly consumed, such as blackberries or strawberries. In addition, their ascorbic acid level is the highest among fruits. The species A. melanocarpa is considered one of the richest known sources of antioxidants, surpassing currants, cranberries, blueberries, elderberries, and gooseberries, and contains one of the highest amounts of sorbitol. The non-edible leaves of genus Aronia became more extensively analyzed as a byproduct or waste material due to their high polyphenol, flavonoid, and phenolic acid content, along with a small amount of anthocyanins, which are used as ingredients in nutraceuticals, herbal teas, bio-cosmetics, cosmeceuticals, food and by the pharmaceutical industry. These plants are a rich source of vitamins, tocopherols, folic acid, and carotenoids. However, they remain outside of mainstream fruit consumption, being well known only to a small audience. This review aims to shed light on L. caerulaea and A. melanocarpa and their bioactive compounds as healthy superfoods with antioxidant, anti-inflammatory, antitumor, antimicrobial, and anti-diabetic effects, and hepato-, cardio-, and neuro-protective potential. In this view, we hope to promote their cultivation and processing, increase their commercial availability, and also highlight the ability of these species to be used as potential nutraceutical sources, helpful for human health.
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Affiliation(s)
- Bogdan-Stefan Negreanu-Pirjol
- Faculty of Pharmacy, Ovidius University of Constanta, Capitan Aviator Al. Serbanescu Street no. 6, Campus, Corp C, 900470 Constanta, Romania
| | - Ovidiu Cristian Oprea
- Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, Faculty of Chemical Engineering and Biotechnologies, University Politehnica of Bucharest, Gh. Polizu no. 1-7, 011061 Bucharest, Romania
- National Research Center for Food Safety, University Politehnica of Bucharest, Splaiul Independentei no. 313, 060042 Bucharest, Romania
- National Center for Micro and Nanomaterials, University Politehnica of Bucharest, Splaiul Independentei no. 313, 060042 Bucharest, Romania
- Academy of Romanian Scientists, Ilfov Street 3, 050044 Bucharest, Romania
| | - Ticuta Negreanu-Pirjol
- Faculty of Pharmacy, Ovidius University of Constanta, Capitan Aviator Al. Serbanescu Street no. 6, Campus, Corp C, 900470 Constanta, Romania
- Academy of Romanian Scientists, Ilfov Street 3, 050044 Bucharest, Romania
| | - Florentina Nicoleta Roncea
- Faculty of Pharmacy, Ovidius University of Constanta, Capitan Aviator Al. Serbanescu Street no. 6, Campus, Corp C, 900470 Constanta, Romania
| | - Ana-Maria Prelipcean
- National Institute of R&D for Biological Sciences, Splaiul Independentei no. 296, 060031 Bucharest, Romania
| | - Oana Craciunescu
- National Institute of R&D for Biological Sciences, Splaiul Independentei no. 296, 060031 Bucharest, Romania
| | - Andreea Iosageanu
- National Institute of R&D for Biological Sciences, Splaiul Independentei no. 296, 060031 Bucharest, Romania
| | - Victoria Artem
- Research-Development Station for Viticulture and Winemaking of Murfatlar, Calea Bucuresti no. 2, Constanta County, 905100 Murfatlar, Romania
| | - Aurora Ranca
- Research-Development Station for Viticulture and Winemaking of Murfatlar, Calea Bucuresti no. 2, Constanta County, 905100 Murfatlar, Romania
| | - Ludmila Motelica
- National Research Center for Food Safety, University Politehnica of Bucharest, Splaiul Independentei no. 313, 060042 Bucharest, Romania
- National Center for Micro and Nanomaterials, University Politehnica of Bucharest, Splaiul Independentei no. 313, 060042 Bucharest, Romania
| | - Anca-Cristina Lepadatu
- Faculty of Natural Sciences and Agricultural Sciences, Ovidius University of Constanta, University Alley no.1, Campus, Corp B, 900470 Constanta, Romania
| | - Madalina Cosma
- Research-Development Station for Viticulture and Winemaking of Murfatlar, Calea Bucuresti no. 2, Constanta County, 905100 Murfatlar, Romania
| | - Dan Razvan Popoviciu
- Faculty of Natural Sciences and Agricultural Sciences, Ovidius University of Constanta, University Alley no.1, Campus, Corp B, 900470 Constanta, Romania
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Cheng Z, Bao Y, Li Z, Wang J, Wang M, Wang S, Wang Y, Wang Y, Li B. Lonicera caerulea ( Haskap berries): a review of development traceability, functional value, product development status, future opportunities, and challenges. Crit Rev Food Sci Nutr 2022; 63:8992-9016. [PMID: 35435788 DOI: 10.1080/10408398.2022.2061910] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Lonicera caerulea is a honeysuckle plant with a long development history. It is defined as a "homology of medicine and food" fruit because it is rich in bioactive substances. By-products (such as pomace, leaves, stems, and flowers), which also have beneficial values, will be produced during processing. Nevertheless, the reuse of derivatives and the further development of new products of Lonicera caerulea are still a challenge. Firstly, this paper traced the development history of Lonicera caerulea and summarized its primary nutrients and bioactive substances, subsequently discussed the research progress and underlying molecular mechanisms of its functional properties, and introduced the application and potential of Lonicera caerulea in the fields of food, health products, cosmetics, medicine, and materials. Finally, this paper put forward the future research direction to promote the development of the Lonicera caerulea industry. To sum up, Lonicera caerulea, as a potential raw material, can be used to produce more functional products. Besides, more in-depth clinical trials are needed to clarify the specific molecular mechanism of the practical components of Lonicera caerulea and improve the rate of development and utilization.HighlightsThe original species of Lonicera caerulea subgroup had appeared on the earth as early as the end of the third century.Lonicera caerulea has been introduced into North America since the 18th century, but the introduction process has not ended until now.Lonicera caerulea widely exists in Eurasia and North America and it has excellent cold tolerance, early maturity and ornamental.The fruits, stems, leaves and flowers of Lonicera caerulea all have bioactive value, but the specific molecular mechanism and utilization need to be improved.Lonicera caerulea has been widely used in food, medicine, health products, cosmetics and materials, but there are still great challenges.
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Affiliation(s)
- Zhen Cheng
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning, China
- Key Laboratory of Healthy Food Nutrition and Innovative Manufacturing of Liaoning Province, Shenyang, Liaoning, China
| | - Yiwen Bao
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning, China
- Key Laboratory of Healthy Food Nutrition and Innovative Manufacturing of Liaoning Province, Shenyang, Liaoning, China
| | - Zhiying Li
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning, China
- Key Laboratory of Healthy Food Nutrition and Innovative Manufacturing of Liaoning Province, Shenyang, Liaoning, China
| | - Jiaxin Wang
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning, China
- Key Laboratory of Healthy Food Nutrition and Innovative Manufacturing of Liaoning Province, Shenyang, Liaoning, China
| | - Mingshuang Wang
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning, China
- Key Laboratory of Healthy Food Nutrition and Innovative Manufacturing of Liaoning Province, Shenyang, Liaoning, China
| | - Sihang Wang
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning, China
- Key Laboratory of Healthy Food Nutrition and Innovative Manufacturing of Liaoning Province, Shenyang, Liaoning, China
| | - Yuanyuan Wang
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning, China
- Key Laboratory of Healthy Food Nutrition and Innovative Manufacturing of Liaoning Province, Shenyang, Liaoning, China
| | - Yuehua Wang
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning, China
- Key Laboratory of Healthy Food Nutrition and Innovative Manufacturing of Liaoning Province, Shenyang, Liaoning, China
| | - Bin Li
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning, China
- Key Laboratory of Healthy Food Nutrition and Innovative Manufacturing of Liaoning Province, Shenyang, Liaoning, China
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Li R, Tao M, Xu T, Pan S, Xu X, Wu T. Small berries as health-promoting ingredients: a review on anti-aging effects and mechanisms in Caenorhabditis elegans. Food Funct 2021; 13:478-500. [PMID: 34927654 DOI: 10.1039/d1fo02184b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Aging is an inevitable, irreversible, and complex process of damage accumulation and functional decline, increasing the risk of various chronic diseases. However, for now no drug can delay aging process nor cure aging-related diseases. Nutritional intervention is considered as a key and effective strategy to promote healthy aging and improve life quality. Small berries, as one of the most common and popular fruits, have been demonstrated to improve cognitive function and possess neuroprotective activities. However, the anti-aging effects of small berries have not been systematically elucidated yet. This review mainly focuses on small berries' anti-aging activity studies involving small berry types, active components, the utilized model organism Caenorhabditis elegans (C. elegans), related signaling pathways, and molecular mechanisms. The purpose of this review is to propose effective strategies to evaluate the anti-aging effects of small berries and provide guidance for the development of anti-aging supplements from small berries.
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Affiliation(s)
- Rong Li
- Key Laboratory of Environment Correlative Dietology (Ministry of Education), College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China.
| | - Mingfang Tao
- Key Laboratory of Environment Correlative Dietology (Ministry of Education), College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China.
| | - Tingting Xu
- Key Laboratory of Environment Correlative Dietology (Ministry of Education), College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China.
| | - Siyi Pan
- Key Laboratory of Environment Correlative Dietology (Ministry of Education), College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China.
| | - Xiaoyun Xu
- Key Laboratory of Environment Correlative Dietology (Ministry of Education), College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China.
| | - Ting Wu
- Key Laboratory of Environment Correlative Dietology (Ministry of Education), College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China.
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Štreimikytė P, Urbonavičienė D, Balčiūnaitienė A, Viškelis P, Viškelis J. Optimization of the Multienzyme-Assisted Extraction Procedure of Bioactive Compounds Extracts from Common Buckwheat ( Fagopyrum esculentum M.) and Evaluation of Obtained Extracts. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10122567. [PMID: 34961038 PMCID: PMC8703388 DOI: 10.3390/plants10122567] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/19/2021] [Accepted: 11/22/2021] [Indexed: 05/28/2023]
Abstract
Optimization of the extraction procedure using a multienzymes cocktail for common buckwheat (Fagopyrum esculentum M.) is important due to the yield, fermentable sugars, oligosaccharides and bioactive compounds for creating higher added value products. This study was undertaken to find out the optimum multienzymes-water extraction on yield and total phenolic compounds for common Buckwheat using response surface methodology (RSM). Three independent variables, time (2, 13, and 24 h), temperature (60 °C, 70 °C, 80 °C), and non-starch polysaccharide (NSP) enzymes mixture (0.10, 0.55, and 1.00 mL), were analyzed to optimize the response variables. NSP hydrolyzing enzymes, cellulase, xylanase, and β-glucanase, were produced by Trichoderma reesei. Estimated optimum conditions for F. esculentum were found: time-2 h, temperature-65 °C, and cellulase activity-8.6 CellG5 Units/mL. Different optimization run samples were collected and lyophilized for further analysis until the hydrophilic property using the water contact angle methodology and rutin content using HPLC was determined. Results indicated NSP enzymes activity did not differ between water contact angles after 13 h of enzymatic water extraction. However, longer fermentation time (24 h) decreased static water contact angle by approximately 3-7° for lyophilized water extract and 2-7° for solid fraction after fermentation. It implies enzymatic hydrolysis during water extraction increased hydrophilic properties in solid fraction and decreased hydrophilicity in water fraction due to the enzymes cleaved glycosidic bonds releasing water-soluble compounds.
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Birhanie ZM, Xiao A, Yang D, Huang S, Zhang C, Zhao L, Liu L, Li J, Chen A, Tang H, Chang L, Pan G, Zhang C, Biswas A, Dey S, Li D, Deng Y. Polysaccharides, Total Phenolic, and Flavonoid Content from Different Kenaf ( Hibiscus cannabinus L.) Genotypes and Their Antioxidants and Antibacterial Properties. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10091900. [PMID: 34579432 PMCID: PMC8466222 DOI: 10.3390/plants10091900] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/25/2021] [Accepted: 08/26/2021] [Indexed: 06/13/2023]
Abstract
Kenaf (Hibiscus cannabinus L.) is a valuable plant with a potential health benefit because of its extensive bioactive compounds. Leaf extracts of 33 kenaf genotypes were investigated for their polysaccharide, total phenolic, and flavonoid content. The antioxidant properties were evaluated by 2,2-Diphenyl-1-picrylhydrazyl (DPPH), 2,2'-azinobis (3-ethylbenzothiazoline-6-sulfonic acid (ABTS), and ferric reducing antioxidant potential (FRAP) assays. Antimicrobial capacity was also assessed against Staphylococcus aureus and Escherichia coli using a disc diffusion assay. The polysaccharide content varied from 6.45-16.12 mg glucose per g DW. Total phenolic and flavonoid content ranged from 6.03-21.15 mg GAE/g DW and 1.55-9.24 mg RE/g DW, respectively. Similarly, varied values in the range 20.55-79.99% of inhibition by DPPH, 56.28-88.30% of inhibition by ABTS and 1.26-5.08 mmol Fe2+/g DW by FRAP assays were obtained for antioxidants of the genotype extracts. Extracts from CS4 and CS2 genotypes had the highest antioxidant activities. Kenaf leaves exhibited antibacterial activity against Staphylococcus aureus and Escherichia coli. Strong correlation was found between antioxidant activity with polysaccharide (DPPH, r = 0.893; ABTS, r = 0.819; FRAP, r = 0.864) and total phenolic content (DPPH, r = 0.850; ABTS, r = 0.959; FRAP, r = 0.953). The results suggested that the kenaf leaves could be used as a natural antioxidants and antimicrobial in food industries.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Defang Li
- Correspondence: (D.L.); (Y.D.); Tel.: +86-13873129468 (D.L.); +86-13808498640 (Y.D.)
| | - Yong Deng
- Correspondence: (D.L.); (Y.D.); Tel.: +86-13873129468 (D.L.); +86-13808498640 (Y.D.)
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