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Zhang HX, Zhou HW, Liu SQ, Zheng ZF, Du ZZ. New Sweet-Tasting Gypenosides from "Jiaogulan" ( Gynostemma pentaphyllum) and Their Interactions with the Homology Model of Sweet Taste Receptors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024. [PMID: 39105697 DOI: 10.1021/acs.jafc.4c03566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/07/2024]
Abstract
Gynostemma pentaphyllum has been used as an herbal tea, vegetable, and dietary supplement for hundreds of years in East Asia. The sweet variety, grown in large areas in Fujian Province, China, is an essential source of "Jiaogulan" herbal tea. However, its sweet components are unknown. To investigate the sweet constituents of Fujian "Jiaogulan" and discover new natural high-potency sweeteners, phytochemical and sensory evaluations were combined to obtain 15 saponins, of which 11 (1-11) were sweet-tasting, including 2 new ones with sweetness intensities 20-200 times higher than that of sucrose, and four (12-15) were bitter-tasting. Their structures were elucidated using spectroscopic methods (NMR, MS, IR, UV), hydrolysis, and comparison with literature data. The contents of the 15 saponins were quantitatively analyzed using UPLC-MS/MS in multiple reaction monitoring mode. The contents of 1 and 2 sweet-tasting gypenosides were 9.913 ± 1.735 and 35.852 ± 1.739 mg/kg, respectively. The content of the sweetest compound (6) was 124.969 ± 0.961 mg/kg. Additionally, compound 4 was the most abundant sweet component (422.530 ± 3.702 mg/kg). Furthermore, molecular docking results suggested interactions of sweet saponins with sweet taste receptors. In general, this study revealed the material basis of the Fujian "Jiaogulan" taste.
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Affiliation(s)
- Hong-Xia Zhang
- National-Local Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forest Biomass Resources; Key Laboratory for Highly-Efficient Utilization of Forest Biomass Resources in the Southwest China, National Forestry and Grassland Administration; College of Materials and Chemical Engineering, Southwest Forestry University, Kunming 650224, China
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Hui-Wei Zhou
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shou-Qing Liu
- National-Local Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forest Biomass Resources; Key Laboratory for Highly-Efficient Utilization of Forest Biomass Resources in the Southwest China, National Forestry and Grassland Administration; College of Materials and Chemical Engineering, Southwest Forestry University, Kunming 650224, China
| | - Zhi-Feng Zheng
- National-Local Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forest Biomass Resources; Key Laboratory for Highly-Efficient Utilization of Forest Biomass Resources in the Southwest China, National Forestry and Grassland Administration; College of Materials and Chemical Engineering, Southwest Forestry University, Kunming 650224, China
- Fujian Provincial Industry Technologies Development Based for New Energy; College of Energy, Xiamen University, Xiamen 361102, China
| | - Zhi-Zhi Du
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
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Hu Y, Badar IH, Zhang L, Yang L, Xu B. Odor and taste characteristics, transduction mechanism, and perceptual interaction in fermented foods: a review. Crit Rev Food Sci Nutr 2024:1-19. [PMID: 39012297 DOI: 10.1080/10408398.2024.2377292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/17/2024]
Abstract
Fermentation is a critical technological process for flavor development in fermented foods. The combination of odor and taste, known as flavor, is crucial in enhancing people's perception and psychology toward fermented foods, thereby increasing their acceptance among consumers. This review summarized the determination and key flavor compound screening methods in fermented foods and analyzed the flavor perception, perceptual interactions, and evaluation methods. The flavor compounds in fermented foods could be separated, purified, and identified by instrument techniques, and a molecular sensory science approach could identify the key flavor compounds. How flavor compounds bind to their respective receptors determines flavor perception, which is influenced by their perceptual interactions, including odor-odor, taste-taste, and odor-taste. Evaluation methods of flavor perception mainly include human sensory evaluation, electronic sensors and biosensors, and neuroimaging techniques. Among them, the biosensor-based evaluation methods could facilitate the investigation of the flavor transduction mechanism and the neuroimaging technique could explain the brain's signals that relate to the perception of flavor and how they compare to signals from other senses. This review aims to elucidate the flavor profile of fermented foods and highlight the significance of comprehending the interactions between various flavor compounds, thus improving the healthiness and sensory attributes.
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Affiliation(s)
- Yingying Hu
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, China
- State key Laboratory of Meat Quality Control and Cultured Meat Development, Jiangsu Yurun Meat Industry Group Co., Ltd, Nanjing, China
| | - Iftikhar Hussain Badar
- Department of Meat Science and Technology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Lang Zhang
- Key Laboratory of Jianghuai Agricultural Product Fine Processing and Resource Utilization, Ministry of Agriculture and Rural Affairs, Anhui Engineering Research Center for High Value Utilization of Characteristic Agricultural Products, College of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, China
| | - Linwei Yang
- State key Laboratory of Meat Quality Control and Cultured Meat Development, Jiangsu Yurun Meat Industry Group Co., Ltd, Nanjing, China
| | - Baocai Xu
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, China
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Liao Y, Liu Y, Zhang W, Dong H, Yang L, Zhang J, Wang Y, Cheng S, Chen G. Effects of variable-temperature drying on the qualities and sweet-substance profile of Zizyphus jujuba Mill. cv. Junzao. Food Chem X 2024; 22:101361. [PMID: 38633738 PMCID: PMC11021840 DOI: 10.1016/j.fochx.2024.101361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 03/22/2024] [Accepted: 04/03/2024] [Indexed: 04/19/2024] Open
Abstract
The changes in the qualities and sweet-substance levels of Junzao jujube during variable-temperature drying (VTD) were investigated. The results showed that VTD retains the original color of jujube, reduces its hardness and chewiness, and decreases its wrinkling while shortening the drying time by 13.2% compared with that of constant temperature drying (CTD). "Electronic-tongue" taste analysis showed that the sweetness of VTD jujube is significantly higher than that for CTD. This is shown to be related to the contents of sucrose, fructose, and glucose, as well as the activities of invertase and sucrose synthase enzymes. In addition, the content trends for sweet amino acids are correlated with the temperature gradient used in VTD. Thus, the present study elucidates the factors governing the transformation of sugar substances in jujube during VTD, as well as providing a practical reference for the application of VTD in the jujube industry.
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Affiliation(s)
- Yaxuan Liao
- College of Food Science and Technology, Shihezi University, Shihezi, Xinjiang 832000, PR China
| | - Yuxing Liu
- College of Food Science and Technology, Shihezi University, Shihezi, Xinjiang 832000, PR China
| | - Weida Zhang
- College of Food Science and Technology, Shihezi University, Shihezi, Xinjiang 832000, PR China
| | - Hao Dong
- Shihezi Testing Institute of Quality and Metrology, Shihezi 832000, PR China
| | - Liqing Yang
- College of Food Science and Technology, Shihezi University, Shihezi, Xinjiang 832000, PR China
| | - Jiajun Zhang
- College of Food Science and Technology, Shihezi University, Shihezi, Xinjiang 832000, PR China
| | - Yunuo Wang
- College of Food Science and Technology, Shihezi University, Shihezi, Xinjiang 832000, PR China
| | - Shaobo Cheng
- College of Food Science and Technology, Shihezi University, Shihezi, Xinjiang 832000, PR China
- Research Center of Xinjiang Characteristic Fruit and Vegetable Storage and Processing Engineering, Ministry of Education, Shihezi, Xinjiang 832000, PR China
| | - Guogang Chen
- College of Food Science and Technology, Shihezi University, Shihezi, Xinjiang 832000, PR China
- Research Center of Xinjiang Characteristic Fruit and Vegetable Storage and Processing Engineering, Ministry of Education, Shihezi, Xinjiang 832000, PR China
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An JP, Liu X, Wang Y. Discovery of bitter masking compounds from Allspice ( Pimenta dioica) using sensory guided isolation. Food Chem X 2024; 22:101426. [PMID: 38736983 PMCID: PMC11087956 DOI: 10.1016/j.fochx.2024.101426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 04/15/2024] [Accepted: 04/27/2024] [Indexed: 05/14/2024] Open
Abstract
Bitter substances in functional foods and beverages can act as nutraceuticals, offering potential health benefits. However, their unpleasant sensory impact reduces the consumption of these foods. Consequently, the discovery of bitter masking compounds is crucial for enhancing the intake of bioactive compounds in functional foods and beverages. Bitter taste is mediated by TAS2Rs, a sub-family of G-protein-coupled receptors. TAS2R14 is especially pivotal in the perception of bitterness, as it is one of the most broadly tuned bitter receptors. In this study, allspice was extracted and purified to yield five single compounds based on sensory guided fractionation. The structures of each compound were determined based on nuclear magnetic resonance (NMR) and high-resolution mass spectrometry (HR-MS). In a sensory evaluation, compound 1 exhibited bitter masking activity against quinine. Molecular docking analysis revealed that compound 1 could act as an antagonist of the TAS2R14 bitter receptor.
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Affiliation(s)
- Jin-Pyo An
- Department of Food Science and Human Nutrition, Citrus Research & Education Center, University of Florida, 700 Experiment Station Road, Lake Alfred, FL 33850, USA
| | - Xin Liu
- Department of Food Science and Human Nutrition, Citrus Research & Education Center, University of Florida, 700 Experiment Station Road, Lake Alfred, FL 33850, USA
| | - Yu Wang
- Department of Food Science and Human Nutrition, Citrus Research & Education Center, University of Florida, 700 Experiment Station Road, Lake Alfred, FL 33850, USA
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Kovale L, Lee S, Song M, Lee J, Son HJ, Sung YK, Kwack MH, Choe W, Kang I, Kim SS, Ha J. Gynostemma pentaphyllum Hydrodistillate and Its Major Component Damulin B Promote Hair Growth-Inducing Properties In Vivo and In Vitro via the Wnt/β-Catenin Pathway in Dermal Papilla Cells. Nutrients 2024; 16:985. [PMID: 38613018 PMCID: PMC11013310 DOI: 10.3390/nu16070985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 03/21/2024] [Accepted: 03/25/2024] [Indexed: 04/14/2024] Open
Abstract
Alopecia, a prevalent yet challenging condition with limited FDA-approved treatments which is accompanied by notable side effects, necessitates the exploration of natural alternatives. This study elucidated the hair growth properties of Gynostemma pentaphyllum leaf hydrodistillate (GPHD) both in vitro and in vivo. Furthermore, damulin B, a major component of GPHD, demonstrated hair growth-promoting properties in vitro. Beyond its established anti-diabetic, anti-obesity, and anti-inflammatory attributes, GPHD exhibited hair growth induction in mice parallel to minoxidil. Moreover, it upregulated the expression of autocrine factors associated with hair growth, including VEGF, IGF-1, KGF, and HGF. Biochemical assays revealed that minoxidil, GPHD, and damulin B induced hair growth via the Wnt/β-catenin pathway through AKT signaling, aligning with in vivo experiments demonstrating improved expression of growth factors. These findings suggest that GPHD and damulin B contribute to the hair growth-inducing properties of dermal papilla cells through the AKT/β-catenin signaling pathway.
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Affiliation(s)
- Lochana Kovale
- Department of Biochemistry and Molecular Biology, Graduate School, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; (L.K.); (S.L.); (M.S.); (H.J.S.); (W.C.); (I.K.); (S.S.K.)
| | - Seoyeon Lee
- Department of Biochemistry and Molecular Biology, Graduate School, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; (L.K.); (S.L.); (M.S.); (H.J.S.); (W.C.); (I.K.); (S.S.K.)
| | - Minhyeok Song
- Department of Biochemistry and Molecular Biology, Graduate School, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; (L.K.); (S.L.); (M.S.); (H.J.S.); (W.C.); (I.K.); (S.S.K.)
| | - Jihyun Lee
- Easy Hydrogen Corporation, Jeju City 63196, Republic of Korea;
| | - Hyeong Jig Son
- Department of Biochemistry and Molecular Biology, Graduate School, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; (L.K.); (S.L.); (M.S.); (H.J.S.); (W.C.); (I.K.); (S.S.K.)
| | - Young Kwan Sung
- Department of Immunology, School of Medicine, Kyungpook National University, Daegu 41944, Republic of Korea; (Y.K.S.); (M.H.K.)
| | - Mi Hee Kwack
- Department of Immunology, School of Medicine, Kyungpook National University, Daegu 41944, Republic of Korea; (Y.K.S.); (M.H.K.)
| | - Wonchae Choe
- Department of Biochemistry and Molecular Biology, Graduate School, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; (L.K.); (S.L.); (M.S.); (H.J.S.); (W.C.); (I.K.); (S.S.K.)
| | - Insug Kang
- Department of Biochemistry and Molecular Biology, Graduate School, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; (L.K.); (S.L.); (M.S.); (H.J.S.); (W.C.); (I.K.); (S.S.K.)
| | - Sung Soo Kim
- Department of Biochemistry and Molecular Biology, Graduate School, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; (L.K.); (S.L.); (M.S.); (H.J.S.); (W.C.); (I.K.); (S.S.K.)
| | - Joohun Ha
- Department of Biochemistry and Molecular Biology, Graduate School, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; (L.K.); (S.L.); (M.S.); (H.J.S.); (W.C.); (I.K.); (S.S.K.)
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Wang P, Ye X, Liu J, Xiao Y, Tan M, Deng Y, Yuan M, Luo X, Zhang D, Xie X, Han X. Recent advancements in the taste transduction mechanism, identification, and characterization of taste components. Food Chem 2024; 433:137282. [PMID: 37696093 DOI: 10.1016/j.foodchem.2023.137282] [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: 04/15/2023] [Revised: 08/09/2023] [Accepted: 08/23/2023] [Indexed: 09/13/2023]
Abstract
In the realm of human nutrition, the phenomenon known as taste refers to a distinctive sensation elicited by the consumption of food and various compounds within the oral cavity and on the tongue. Moreover, taste affects the overall comfort in the oral cavity, and is a fundamental attribute for the assessment of food items. Accordingly, clarifying the material basis of taste would be conducive to deepening the cognition of taste, investigating the mechanism of taste presentation, and accurately covering up unpleasant taste. In this paper, the basic biology and physiology of transduction of bitter, umami, sweet, sour, salty, astringent, as well as spicy tastes are reviewed. Furthermore, the detection process of taste components is summarized. Particularly, the applications, advantages, and distinctions of various isolation, identification, and evaluation methods are discussed in depth. In conclusion, the future of taste component detection is discussed.
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Affiliation(s)
- Pinhu Wang
- School of Pharmacy, Chengdu Medical College, Chengdu 610500, PR China
| | - Xiang Ye
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, PR China
| | - Jun Liu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Yao Xiao
- School of Pharmacy, Chengdu Medical College, Chengdu 610500, PR China
| | - Min Tan
- School of Pharmacy, Chengdu Medical College, Chengdu 610500, PR China
| | - Yue Deng
- School of Pharmacy, Chengdu Medical College, Chengdu 610500, PR China
| | - Mulan Yuan
- School of Pharmacy, Chengdu Medical College, Chengdu 610500, PR China
| | - Xingmei Luo
- School of Pharmacy, Chengdu Medical College, Chengdu 610500, PR China
| | - Dingkun Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
| | - Xingliang Xie
- School of Pharmacy, Chengdu Medical College, Chengdu 610500, PR China
| | - Xue Han
- School of Pharmacy, Chengdu Medical College, Chengdu 610500, PR China.
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7
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Oliveira-Filho ER, Voiniciuc C, Hanson AD. Adapting enzymes to improve their functionality in plants: why and how. Biochem Soc Trans 2023; 51:1957-1966. [PMID: 37787016 PMCID: PMC10657173 DOI: 10.1042/bst20230532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 09/17/2023] [Accepted: 09/21/2023] [Indexed: 10/04/2023]
Abstract
Synthetic biology creates new metabolic processes and improves existing ones using engineered or natural enzymes. These enzymes are often sourced from cells that differ from those in the target plant organ with respect to, e.g. redox potential, effector levels, or proteostasis machinery. Non-native enzymes may thus need to be adapted to work well in their new plant context ('plantized') even if their specificity and kinetics in vitro are adequate. Hence there are two distinct ways in which an enzyme destined for use in plants can require improvement: In catalytic properties such as substrate and product specificity, kcat, and KM; and in general compatibility with the milieu of cells that express the enzyme. Continuous directed evolution systems can deliver both types of improvement and are so far the most broadly effective way to deliver the second type. Accordingly, in this review we provide a short account of continuous evolution methods, emphasizing the yeast OrthoRep system because of its suitability for plant applications. We then cover the down-to-earth and increasingly urgent issues of which enzymes and enzyme properties can - or cannot - be improved in theory, and which in practice are the best to target for crop improvement, i.e. those that are realistically improvable and important enough to warrant deploying continuous directed evolution. We take horticultural crops as examples because of the opportunities they present and to sharpen the focus.
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Affiliation(s)
| | - Cătălin Voiniciuc
- Horticultural Sciences Department, University of Florida, Gainesville, FL, U.S.A
| | - Andrew D. Hanson
- Horticultural Sciences Department, University of Florida, Gainesville, FL, U.S.A
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Gan J, Li Y, Tang D, Guo B, Li D, Cao F, Sun C, Yu L, Yan Z. The Complete Chloroplast Genomes of Gynostemma Reveal the Phylogenetic Relationships of Species within the Genus. Genes (Basel) 2023; 14:genes14040929. [PMID: 37107687 PMCID: PMC10138119 DOI: 10.3390/genes14040929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 04/06/2023] [Accepted: 04/16/2023] [Indexed: 04/29/2023] Open
Abstract
Gynostemma is an important medicinal and food plant of the Cucurbitaceae family. The phylogenetic position of the genus Gynostemma in the Cucurbitaceae family has been determined by morphology and phylogenetics, but the evolutionary relationships within the genus Gynostemma remain to be explored. The chloroplast genomes of seven species of the genus Gynostemma were sequenced and annotated, of which the genomes of Gynostemma simplicifolium, Gynostemma guangxiense and Gynostemma laxum were sequenced and annotated for the first time. The chloroplast genomes ranged from 157,419 bp (Gynostemma compressum) to 157,840 bp (G. simplicifolium) in length, including 133 identical genes: 87 protein-coding genes, 37 tRNA genes, eight rRNA genes and one pseudogene. Phylogenetic analysis showed that the genus Gynostemma is divided into three primary taxonomic clusters, which differs from the traditional morphological classification of the genus Gynostemma into the subgenus Gynostemma and Trirostellum. The highly variable regions of atpH-atpL, rpl32-trnL, and ccsA-ndhD, the repeat unilts of AAG/CTT and ATC/ATG in simple sequence repeats (SSRs) and the length of overlapping regions between rps19 and inverted repeats(IRb) and between ycf1 and small single-copy (SSC) were found to be consistent with the phylogeny. Observations of fruit morphology of the genus Gynostemma revealed that transitional state species have independent morphological characteristics, such as oblate fruit and inferior ovaries. In conclusion, both molecular and morphological results showed consistency with those of phylogenetic analysis.
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Affiliation(s)
- Jiaxia Gan
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Key Laboratory of Ministry of Education, Beijing 100193, China
| | - Ying Li
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Key Laboratory of Ministry of Education, Beijing 100193, China
| | - Deying Tang
- Yunnan Branch of Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Jinghong 666100, China
| | - Baolin Guo
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Key Laboratory of Ministry of Education, Beijing 100193, China
| | - Doudou Li
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Key Laboratory of Ministry of Education, Beijing 100193, China
| | - Feng Cao
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Key Laboratory of Ministry of Education, Beijing 100193, China
| | - Chao Sun
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Key Laboratory of Ministry of Education, Beijing 100193, China
| | - Liying Yu
- Guangxi Botanical Garden of Medicinal Plant, Guangxi TCM Resources General Survey and Data Collection Key Laboratory, Nanning 530023, China
| | - Zhuyun Yan
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
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Jeong GH, Lee H, Lee SS, Chung BY, Bai HW, Kim TH. Inhibitory Effects of Thermolysis Transformation Products of Rotenone on Nitric Oxide Production. Int J Mol Sci 2023; 24:ijms24076095. [PMID: 37047068 PMCID: PMC10093917 DOI: 10.3390/ijms24076095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 03/21/2023] [Accepted: 03/21/2023] [Indexed: 04/14/2023] Open
Abstract
Rotenone, isolated from Derris, Lonchocarpus, and Tephrosia from the family Fabaceae, has been shown to have a variety of biological properties and is used in various agricultural industries as a potent biopesticide. However, recent reports have demonstrated that rotenone has the potential to cause several adverse effects such as a neurodegenerative disease. This study aimed to induce thermolysis of the biopesticide rotenone and enhance the functionality of the degraded products. Rotenone (1) was degraded after autoclaving for 12 h, and the thermolytic reactants showed enhanced anti-inflammatory capacity against nitric oxide (NO) production. The structures of the newly modified products were spectroscopically determined. The thermal reaction products included various isoflavonoid derivatives 2-6, whose structures were characterized as being produced via chemical reactions in rotenone at the C-12 positions. Among the degraded products, (-)-tubaic acid (6) exhibited significantly improved anti-inflammatory effects compared to the original rotenone. Quantitative LC-MS analysis of the major thermolysis products generated in Derris extract containing rotenone was performed using isolate 2-5 purified from autoclaved rotenone. These results suggest that the thermal transformation of rotenone can improve the functionality of anti-inflammatory agents.
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Affiliation(s)
- Gyeong Han Jeong
- Research Division for Biotechnology, Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI), Jeongeup 56212, Republic of Korea
- Center for Companion Animal New Drug Development, Korea Institute of Toxicology (KIT), Jeongeup 56212, Republic of Korea
| | - Hanui Lee
- Research Division for Biotechnology, Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI), Jeongeup 56212, Republic of Korea
- Center for Companion Animal New Drug Development, Korea Institute of Toxicology (KIT), Jeongeup 56212, Republic of Korea
| | - Seung Sik Lee
- Research Division for Biotechnology, Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI), Jeongeup 56212, Republic of Korea
- Radiation Biotechnology and Applied Radioisotope Science, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - Byung Yeoup Chung
- Research Division for Biotechnology, Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI), Jeongeup 56212, Republic of Korea
| | - Hyoung-Woo Bai
- Research Division for Biotechnology, Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI), Jeongeup 56212, Republic of Korea
- Center for Companion Animal New Drug Development, Korea Institute of Toxicology (KIT), Jeongeup 56212, Republic of Korea
- Radiation Biotechnology and Applied Radioisotope Science, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - Tae Hoon Kim
- Department of Food Science and Biotechnology, Daegu University, Gyeongsan 38453, Republic of Korea
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Zhao H, Xue D, Zhang L. Electrochemical fingerprints identification of tea based on one-dimensional convolutional neural network. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2023. [DOI: 10.1007/s11694-023-01812-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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11
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Lu J, Cao Y, Pan Y, Mei S, Zhang G, Chu Q, Chen P. Sensory-Guided Identification and Characterization of Kokumi-Tasting Compounds in Green Tea ( Camellia sinensis L.). MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27175677. [PMID: 36080442 PMCID: PMC9458127 DOI: 10.3390/molecules27175677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 07/21/2022] [Accepted: 07/23/2022] [Indexed: 11/19/2022]
Abstract
The chemical substances responsible for the kokumi taste of green tea infusion are still unclear. Here, we isolated the kokumi compound-containing fractions from green tea infusion through ultrafiltration, and the major kokumi compounds were characterized as γ-Glu-Gln and γ-Glu-Cys-Gly (GSH) through ultra-high-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS). The results indicated that peptides and amino acids were essential compounds in the kokumi-enriched fractions for conducting the sense of kokumi. L-theanine had an enhancing effect on the kokumi taste of green tea infusion, which was confirmed in the sensory reconstitution study. Thus, peptides, especially γ-Glu-Gln and GSH, are the major kokumi compounds in green tea infusion, which has the potential of improving the flavor of tea beverages.
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Affiliation(s)
| | | | | | | | | | | | - Ping Chen
- Correspondence: ; Tel.: +86-18857183162
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