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Liang S, Gao Y, Granato D, Ye JH, Zhou W, Yin JF, Xu YQ. Pruned tea biomass plays a significant role in functional food production: A review on characterization and comprehensive utilization of abandon-plucked fresh tea leaves. Compr Rev Food Sci Food Saf 2024; 23:e13406. [PMID: 39030800 DOI: 10.1111/1541-4337.13406] [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: 03/07/2024] [Revised: 05/18/2024] [Accepted: 06/21/2024] [Indexed: 07/22/2024]
Abstract
Tea is the second largest nonalcoholic beverage in the world due to its characteristic flavor and well-known functional properties in vitro and in vivo. Global tea production reaches 6.397 million tons in 2022 and continues to rise. Fresh tea leaves are mainly harvested in spring, whereas thousands of tons are discarded in summer and autumn. Herein, pruned tea biomass refers to abandon-plucked leaves being pruned in the non-plucking period, especially in summer and autumn. At present, no relevant concluding remarks have been made on this undervalued biomass. This review summarizes the seasonal differences of intrinsic metabolites and pays special attention to the most critical bioactive and flavor compounds, including polyphenols, theanine, and caffeine. Additionally, meaningful and profound methods to transform abandon-plucked fresh tea leaves into high-value products are reviewed. In summer and autumn, tea plants accumulate much more phenols than in spring, especially epigallocatechin gallate (galloyl catechin), anthocyanins (catechin derivatives), and proanthocyanidins (polymerized catechins). Vigorous carbon metabolism induced by high light intensity and temperature in summer and autumn also accumulates carbohydrates, such as soluble sugars and cellulose. The characteristics of abandon-plucked tea leaves make them not ideal raw materials for tea, but suitable for novel tea products like beverages and food ingredients using traditional or hybrid technologies such as enzymatic transformation, microbial fermentation, formula screening, and extraction, with the abundant polyphenols in summer and autumn tea serving as prominent flavor and bioactive contributors.
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Affiliation(s)
- Shuang Liang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology, Genetics and Breeding of Special Economic Animals and Plants, Ministry of Agriculture and Rural Affairs, Hangzhou, China
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, China
| | - Ying Gao
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology, Genetics and Breeding of Special Economic Animals and Plants, Ministry of Agriculture and Rural Affairs, Hangzhou, China
| | - Daniel Granato
- Bioactivity and Applications Lab, Department of Biological Sciences, School of Natural Sciences Faculty of Science and Engineering, University of Limerick, Limerick, Ireland
| | - Jian-Hui Ye
- Zhejiang University Tea Research Institute, Hangzhou, China
| | - Weibiao Zhou
- Department of Food Science and Technology, National University of Singapore, Singapore, Singapore
| | - Jun-Feng Yin
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology, Genetics and Breeding of Special Economic Animals and Plants, Ministry of Agriculture and Rural Affairs, Hangzhou, China
| | - Yong-Quan Xu
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Biology, Genetics and Breeding of Special Economic Animals and Plants, Ministry of Agriculture and Rural Affairs, Hangzhou, China
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Du Z, Gao F, Wang S, Sun S, Chen C, Wang X, Wu R, Yu X. Genome-Wide Investigation of Oxidosqualene Cyclase Genes Deciphers the Genetic Basis of Triterpene Biosynthesis in Tea Plants. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:10584-10595. [PMID: 38652774 DOI: 10.1021/acs.jafc.4c00346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Triterpenoids from Camellia species comprise a diverse class of bioactive compounds with great therapeutic potential. However, triterpene biosynthesis in tea plants (Camellia sinensis) remains elusive. Here, we identified eight putative 2,3-oxidosqualene cyclase (OSC) genes (CsOSC1-8) from the tea genome and characterized the functions of five through heterologous expression in yeast and tobacco and transient overexpression in tea plants. CsOSC1 was found to be a β-amyrin synthase, whereas CsOSC4, 5, and 6 exhibited multifunctional α-amyrin synthase activity. Molecular docking and site-directed mutagenesis showed that the CsOSC6M259T/W260L double mutant yielded >40% lupeol, while the CsOSC1 W259L single mutant alone was sufficient for lupeol production. The V732F mutation in CsOSC5 altered product formation from friedelin to taraxasterol and ψ-taraxasterol. The L254 M mutation in the cycloartenol synthase CsOSC8 enhanced the catalytic activity. Our findings shed light on the molecular basis governing triterpene diversity in tea plants and offer potential avenues for OSC engineering.
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Affiliation(s)
- Zhenghua Du
- School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Center for Plant Metabolomics, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Fuquan Gao
- Center for Plant Metabolomics, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Shuyan Wang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Shuai Sun
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Chanxin Chen
- School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiaxia Wang
- Center for Plant Metabolomics, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Ruimei Wu
- Center for Plant Metabolomics, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiaomin Yu
- Center for Plant Metabolomics, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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Yang G, Qi Z, Shan S, Xie D, Tan X. Advances in Separation, Biological Properties, and Structure-Activity Relationship of Triterpenoids Derived from Camellia oleifera Abel. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:4574-4586. [PMID: 38385335 DOI: 10.1021/acs.jafc.3c09168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Extensive research has been conducted on Camellia oleifera Abel., a cultivar predominantly distributed in China, to investigate its phytochemical composition, owning to its potential as an edible oil crop. Pentacyclic triterpene saponins, as essential active constituents, play a significant role in contributing to the pharmacological effects of this cultivar. The saponins derived from C. oleifera (CoS) offer a diverse array of bioactivity benefits, including antineoplastic/bactericidal/inflammatory properties, cardiovascular protection, neuroprotection, as well as hypoglycemic and hypolipidemic effects. This review presents a comprehensive analysis of the isolation and pharmacological properties of CoS. Specially, we attempt to reveal the antitumor structure-activity relationship (SAR) of CoS-derived triterpenoids. The active substitution sites of CoS, namely, C-3, C-15, C-16, C-21, C-22, C-23, and C-28 pentacyclic triterpenoids, make it a unique and highly valuable substance with significant medicinal and culinary applications. As such, CoS can play a critical role in transforming people's lives, providing unique medicinal benefits, and contributing to the advancement of both medicine and cuisine.
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Affiliation(s)
- Guliang Yang
- National Engineering Laboratory for Rice and Byproducts Processing, Food Science and Engineering College, Central South University of Forestry and Technology, Changsha, Hunan 410004, People's Republic of China
| | - Zhiwen Qi
- National Engineering Laboratory for Biomass Chemical Utilization, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry; Nanjing, Jiangsu 210042, People's Republic of China
| | - Sijie Shan
- National Engineering Laboratory for Rice and Byproducts Processing, Food Science and Engineering College, Central South University of Forestry and Technology, Changsha, Hunan 410004, People's Republic of China
| | - Di Xie
- Loudi City Farmer Quality Education Center, Loudi, Hunan 417000, People's Republic of China
| | - Xiaofeng Tan
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Collaborative Innovation Center of Cultivation and Utilization for Non-Wood Forest Tree, Academy of Camellia Oil Tree, Central South University of Forestry and Technology, Changsha, Hunan 410004, People's Republic of China
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4
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Shen P, Jiang X, Zhang J, Wang J, Raj R, Li G, Ge H, Wang W, Yu B, Zhang J. Isolation and microbial transformation of tea sapogenin from seed pomace of Camellia oleifera with anti-inflammatory effects. Chin J Nat Med 2024; 22:280-288. [PMID: 38553195 DOI: 10.1016/s1875-5364(24)60598-4] [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: 07/02/2023] [Indexed: 04/02/2024]
Abstract
In the current study, tea saponin, identified as the primary bioactive constituent in seed pomace of Camellia oleifera Abel., was meticulously extracted and hydrolyzed to yield five known sapogenins: 16-O-tiglogycamelliagnin B (a), camelliagnin A (b), 16-O-angeloybarringtogenol C (c), theasapogenol E (d), theasapogenol F (e). Subsequent biotransformation of compound a facilitated the isolation of six novel metabolites (a1-a6). The anti-inflammatory potential of these compounds was assessed using pathogen-associated molecular patterns (PAMPs) and damage-associated molecular patterns molecules (DAMPs)-mediated cellular inflammation models. Notably, compounds b and a2 demonstrated significant inhibitory effects on both lipopolysaccharide (LPS) and high-mobility group box 1 (HMGB1)-induced inflammation, surpassing the efficacy of the standard anti-inflammatory agent, carbenoxolone. Conversely, compounds d, a3, and a6 selectivity targeted endogenous HMGB1-induced inflammation, showcasing a pronounced specificity. These results underscore the therapeutic promise of C. oleifera seed pomace-derived compounds as potent agents for the management of inflammatory diseases triggered by infections and tissue damage.
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Affiliation(s)
- Pingping Shen
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Xuewa Jiang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Jingling Zhang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Jiayi Wang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Richa Raj
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Guolong Li
- Co-construction Collaborative Innovation Center for Chinese Medicine Resources Industrialization by Shaanxi & Education Ministry, Shaanxi Province Key Laboratory of New Drugs and Chinese Medicine Foundation Research, Shaanxi University of Chinese Medicine, Xianyang 712046, China
| | - Haixia Ge
- School of Life Sciences, Huzhou University, Huzhou 313000, China
| | - Weiwei Wang
- Nanjing Hospital of Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Nanjing 210046, China
| | - Boyang Yu
- Jiangsu Key Laboratory of TCM Evaluation and Translational Research, China Pharmaceutical University, Nanjing 211198, China
| | - Jian Zhang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China; Jiangsu Key Laboratory of TCM Evaluation and Translational Research, China Pharmaceutical University, Nanjing 211198, China.
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Zhou F, Peterson T, Fan Z, Wang S. The Commonly Used Stabilizers for Phytochemical-Based Nanoparticles: Stabilization Effects, Mechanisms, and Applications. Nutrients 2023; 15:3881. [PMID: 37764665 PMCID: PMC10534333 DOI: 10.3390/nu15183881] [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: 08/16/2023] [Revised: 09/01/2023] [Accepted: 09/05/2023] [Indexed: 09/29/2023] Open
Abstract
Phytochemicals, such as resveratrol, curcumin, and quercetin, have many benefits for health, but most of them have a low bioavailability due to their poor water solubility and stability, quick metabolism, and clearance, which restricts the scope of their potential applications. To overcome these issues, different types of nanoparticles (NPs), especially biocompatible and biodegradable NPs, have been developed. NPs can carry phytochemicals and increase their solubility, stability, target specificity, and oral bioavailability. However, NPs are prone to irreversible aggregation, which leads to NP instability and loss of functions. To remedy this shortcoming, stabilizers like polymers and surfactants are incorporated on NPs. Stabilizers not only increase the stability of NPs, but also improve their characteristics. The current review focused on discussing the state of the art in research on synthesizing phytochemical-based NPs and their commonly employed stabilizers. Furthermore, stabilizers in these NPs were also discussed in terms of their applications, effects, and underlying mechanisms. This review aimed to provide more references for developing stabilizers and NPs for future research.
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Affiliation(s)
- Fang Zhou
- College of Health Solutions, Arizona State University, Phoenix, AZ 85004, USA;
| | - Tiffany Peterson
- College of Integrative Sciences and Arts, Arizona State University, Phoenix, AZ 85004, USA;
| | - Zhaoyang Fan
- School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, AZ 85281, USA;
| | - Shu Wang
- College of Health Solutions, Arizona State University, Phoenix, AZ 85004, USA;
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Chen Y, Gao Y, Yuan M, Zheng Z, Yin J. Anti- Candida albicans Effects and Mechanisms of Theasaponin E1 and Assamsaponin A. Int J Mol Sci 2023; 24:ijms24119350. [PMID: 37298302 DOI: 10.3390/ijms24119350] [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: 04/07/2023] [Revised: 04/27/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023] Open
Abstract
Candida albicans is an opportunistic human fungal pathogen, and its drug resistance is becoming a serious problem. Camellia sinensis seed saponins showed inhibitory effects on resistant Candida albicans strains, but the active components and mechanisms are unclear. In this study, the effects and mechanisms of two Camellia sinensis seed saponin monomers, theasaponin E1 (TE1) and assamsaponin A (ASA), on a resistant Candida albicans strain (ATCC 10231) were explored. The minimum inhibitory concentration and minimum fungicidal concentration of TE1 and ASA were equivalent. The time-kill curves showed that the fungicidal efficiency of ASA was higher than that of TE1. TE1 and ASA significantly increased the cell membrane permeability and disrupted the cell membrane integrity of C. albicans cells, probably by interacting with membrane-bound sterols. Moreover, TE1 and ASA induced the accumulation of intracellular ROS and decreased the mitochondrial membrane potential. Transcriptome and qRT-PCR analyses revealed that the differentially expressed genes were concentrated in the cell wall, plasma membrane, glycolysis, and ergosterol synthesis pathways. In conclusion, the antifungal mechanisms of TE1 and ASA included the interference with the biosynthesis of ergosterol in fungal cell membranes, damage to the mitochondria, and the regulation of energy metabolism and lipid metabolism. Tea seed saponins have the potential to be novel anti-Candida albicans agents.
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Affiliation(s)
- Yuhong Chen
- Key Laboratory of Tea Biology and Resources Utilization, Tea Research Institute of Chinese Academy of Agricultural Sciences, Ministry of Agriculture, 9 South Meiling Road, Hangzhou 310008, China
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Ying Gao
- Key Laboratory of Tea Biology and Resources Utilization, Tea Research Institute of Chinese Academy of Agricultural Sciences, Ministry of Agriculture, 9 South Meiling Road, Hangzhou 310008, China
| | - Mingan Yuan
- Jinhua Academy of Agricultural Science, Jinhua 321000, China
| | - Zhaisheng Zheng
- Jinhua Academy of Agricultural Science, Jinhua 321000, China
| | - Junfeng Yin
- Key Laboratory of Tea Biology and Resources Utilization, Tea Research Institute of Chinese Academy of Agricultural Sciences, Ministry of Agriculture, 9 South Meiling Road, Hangzhou 310008, China
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7
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Effect of Tea Saponins on Rumen Microbiota and Rumen Function in Qinchuan Beef Cattle. Microorganisms 2023; 11:microorganisms11020374. [PMID: 36838339 PMCID: PMC9963011 DOI: 10.3390/microorganisms11020374] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 01/20/2023] [Accepted: 01/28/2023] [Indexed: 02/05/2023] Open
Abstract
Antibiotics can promote livestock growth but have side effects, so the search for safe and effective alternatives to antibiotics is urgent. This study aimed to evaluate the effect of supplementing cattle feed with tea saponins on ruminal bacteria and fungi. Sixteen Qinchuan beef cattle with a live body weight of 250 ± 10 kg were divided into four groups (four animals in each group) using a completely randomized experimental design. Four different levels of tea saponins were provided to the Qinchuan cattle as treatments, including 0 g/cattle per day control, CON), 10 g/cattle per day (low-level, LT), 20 g/cattle per day (medium-level, MT) and 30 g/cattle per day (high-level, HT). The pre-feeding period was 10 days and the official period was 80 days in this experiment. After 90 days of feeding, the rumen fluid from sixteen Qinchuan beef cattle was collected using an oral stomach tube for evaluating changes in ruminal microbiota and rumen fermentation parameters. Results indicate that the total VFAs and proportions of propionate in the LT group was significantly higher than that in the CON and HT groups (p < 0.05). For ruminal bacteria, results indicate that the Chao1 index of the MT group was significantly lower than the CON and HT groups (p < 0.05). The phyla Bacteroidetes and Firmicutes were found to be the most abundant in all treatment groups, with the LT group having significantly increased relative abundances of Proteobacteria, Actinobacteria and Ascomycota at the phylum level (p < 0.05). The relative abundance of Bacteroides was found to be relatively lower in the LT, MT and HT treatment groups compared with the CON treatment group at the genus level (p < 0.05). For ruminal fungi, the LT treatment group was found to have higher relative abundances of Saccharomyces and Aspergillus, and lower relative abundances of Succiniclasticum and Bacteroides at the at the phylum level (p < 0.05). Compared with the CON treatment group, a significant increase in the relative abundance of Saccharomyces and Aspergillus were observed in the LT treatment group at the genus level (p < 0.05). PICRUSt analyses identified pathways associated with Xenobiotic biodegradation and metabolism and glycolysisIII to be significantly enriched in the LT and HT treatment groups (p < 0.05). These findings could provide insights on how tea saponins may influence ruminal bacteria and fungi, providing a theoretical basis for replacing antibiotics with tea saponins for promoting growth in cattle.
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Pathaw N, Devi KS, Sapam R, Sanasam J, Monteshori S, Phurailatpam S, Devi HC, Chanu WT, Wangkhem B, Mangang NL. A comparative review on the anti-nutritional factors of herbal tea concoctions and their reduction strategies. Front Nutr 2022; 9:988964. [PMID: 36276812 PMCID: PMC9581206 DOI: 10.3389/fnut.2022.988964] [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: 07/07/2022] [Accepted: 09/09/2022] [Indexed: 11/27/2022] Open
Abstract
Tea is an important beverage consumed worldwide. Of the different types of tea available, herbal tea is an important beverage consumed owing to its popularity as a drink and stress relieving factors, several different herbal concoctions made from seeds, leaves, or roots are currently consumed and sold as herbal teas. The herbal teas are not the usual tea but "tisanes." They are caffeine free and popular for their medicinal property or immune boosters. Herbal tea formulations are popularly sold and consumed by millions owing to their health benefits as they are rich in antioxidants and minerals. However, plants are also known to contain toxic and anti-nutritional factors. Anti-nutritional factors are known to interfere with the metabolic process and hamper the absorption of important nutrients in the body. These anti-nutritional factors include saponins, tannins, alkaloids, oxalates, lectins, goitrogens, cyanogens, and lethogens. These chemicals are known to have deleterious effects on human health. Therefore, it is important to understand and assess the merits and demerits before consumption. Also, several techniques are currently used to process and reduce the anti-nutrients in foods. This review is focused on comparing the contents of various anti-nutritional factors in some underutilized plants of North-East India used as herbal tea along with processing methods that can be used to reduce the level of these anti-nutrients.
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Affiliation(s)
- Neeta Pathaw
- Indian Council of Agricultural Research, Research Complex for North Eastern Hill Region, Imphal, Manipur, India
| | - Konjengbam Sarda Devi
- Indian Council of Agricultural Research, Research Complex for North Eastern Hill Region, Imphal, Manipur, India
| | - Redina Sapam
- Indian Council of Agricultural Research, Research Complex for North Eastern Hill Region, Imphal, Manipur, India
| | - Jyotsana Sanasam
- Indian Council of Agricultural Research, Research Complex for North Eastern Hill Region, Imphal, Manipur, India
| | - Sapam Monteshori
- Indian Council of Agricultural Research, Research Complex for North Eastern Hill Region, Imphal, Manipur, India
| | - Sumitra Phurailatpam
- Multi Technology Testing Centre and Vocational Training Centre, College of Agriculture, Central Agricultural University, Imphal, Manipur, India
| | | | | | - Baby Wangkhem
- College of Agriculture, Central Agricultural University, Imphal, Manipur, India
| | - Naorem Loya Mangang
- Indian Council of Agricultural Research, Research Complex for North Eastern Hill Region, Imphal, Manipur, India
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9
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Tang D, Shen Y, Li F, Yue R, Duan J, Ye Z, Lin Y, Zhou W, Yang Y, Chen L, Wang H, Zhao J, Li P. Integrating metabolite and transcriptome analysis revealed the different mechanisms of characteristic compound biosynthesis and transcriptional regulation in tea flowers. FRONTIERS IN PLANT SCIENCE 2022; 13:1016692. [PMID: 36247612 PMCID: PMC9557745 DOI: 10.3389/fpls.2022.1016692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 09/12/2022] [Indexed: 06/16/2023]
Abstract
The flowers of tea plants (Camellia sinensis), as well as tea leaves, contain abundant secondary metabolites and are big potential resources for the extraction of bioactive compounds or preparation of functional foods. However, little is known about the biosynthesis and transcriptional regulation mechanisms of those metabolites in tea flowers, such as terpenoid, flavonol, catechins, caffeine, and theanine. This study finely integrated target and nontarget metabolism analyses to explore the metabolic feature of developing tea flowers. Tea flowers accumulated more abundant terpenoid compounds than young leaves. The transcriptome data of developing flowers and leaves showed that a higher expression level of later genes of terpenoid biosynthesis pathway, such as Terpene synthases gene family, in tea flowers was the candidate reason of the more abundant terpenoid compounds than in tea leaves. Differently, even though flavonol and catechin profiling between tea flowers and leaves was similar, the gene family members of flavonoid biosynthesis were selectively expressed by tea flowers and tea leaves. Transcriptome and phylogenetic analyses indicated that the regulatory mechanism of flavonol biosynthesis was perhaps different between tea flowers and leaves. However, the regulatory mechanism of catechin biosynthesis was perhaps similar between tea flowers and leaves. This study not only provides a global vision of metabolism and transcriptome in tea flowers but also uncovered the different mechanisms of biosynthesis and transcriptional regulation of those important compounds.
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Affiliation(s)
- Dingkun Tang
- State Key Laboratory of Tea Plant Biology and Utilization, College of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, China
| | - Yihua Shen
- State Key Laboratory of Tea Plant Biology and Utilization, College of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, China
| | - Fangdong Li
- College of Science, Anhui Agricultural University, Hefei, China
| | - Rui Yue
- State Key Laboratory of Tea Plant Biology and Utilization, College of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, China
| | - Jianwei Duan
- State Key Laboratory of Tea Plant Biology and Utilization, College of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, China
| | - Zhili Ye
- State Key Laboratory of Tea Plant Biology and Utilization, College of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, China
| | - Ying Lin
- State Key Laboratory of Tea Plant Biology and Utilization, College of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, China
| | - Wei Zhou
- State Key Laboratory of Tea Plant Biology and Utilization, College of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, China
| | - Yilin Yang
- State Key Laboratory of Tea Plant Biology and Utilization, College of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, China
| | - Lixiao Chen
- Municipal Research Institute for Processing of Agricultural and Featured Products, Shiyan Academy of Agricultural Science, Shiyan, China
| | - Hongyan Wang
- State Key Laboratory of Tea Plant Biology and Utilization, College of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, China
| | - Jian Zhao
- State Key Laboratory of Tea Plant Biology and Utilization, College of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, China
| | - Penghui Li
- State Key Laboratory of Tea Plant Biology and Utilization, College of Tea and Food Science and Technology, Anhui Agricultural University, Hefei, China
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10
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Liu J, Hu L, Chen Y, Xiao Y, Zheng M, Yu Z, Liu Y, Zhou Y. Effects and mechanism of camellia saponin on the physicochemical and oxidative stability of camellia oil body-based emulsions. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Anti-inflammatory/anti-oxidant properties and the UPLC-QTOF/MS-based metabolomics discrimination of three yellow camellia species. Food Res Int 2022; 160:111628. [DOI: 10.1016/j.foodres.2022.111628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 06/28/2022] [Accepted: 07/05/2022] [Indexed: 11/18/2022]
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12
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Yang X, Liu T, Qi S, Gu H, Li J, Yang L. Tea saponin additive to extract eleutheroside B and E from Eleutherococcus senticosus by ultrasonic mediation and its application in a semi-pilot scale. ULTRASONICS SONOCHEMISTRY 2022; 86:106039. [PMID: 35598514 PMCID: PMC9127216 DOI: 10.1016/j.ultsonch.2022.106039] [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: 02/14/2022] [Revised: 05/06/2022] [Accepted: 05/13/2022] [Indexed: 05/26/2023]
Abstract
The safety of ethanol in operations and its effects on human health are gradually being questioned. Under this premise, we attempted to use the natural surfactant tea saponin, which originates from the processing residues of camellia oil, as the additive of the extraction solvent and to extract eleutheroside B and eleutheroside E in the roots and rhizomes of E. senticosus by ultrasonic mediation. After a single-factor experiment, extraction kinetics at different powers and reaction temperatures, and Box-Behnken design optimization, the optimal conditions obtained were 0.3% tea saponin solution as the extraction solvent, 20 mL/g liquid-solid ratio, 250 W ultrasonic irradiation power (43.4 mW/g ultrasonic power density) and 40 min ultrasonic irradiation time. Under optimal conditions, satisfactory yields of eleutheroside B (1.06 ± 0.04 mg/g) and eleutheroside E (2.65 ± 0.12 mg/g) were obtained with semi pilot scale ultrasonic extraction equipment. The experiments showed that compared with the traditional thermal extraction process, the extraction time is significantly reduced at lower operating temperatures.
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Affiliation(s)
- Xinyu Yang
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Tingting Liu
- College of Pharmacy, Qiqihar Medical University, Qiqihar 161006, China
| | - Shuwen Qi
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Huiyan Gu
- School of Forestry, Northeast Forestry University, Harbin 150040, China.
| | - Jialei Li
- Food Processing Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China
| | - Lei Yang
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; Heilongjiang Provincial Key Laboratory of Ecological Utilization of Forestry-Based Active Substances, Harbin 150040, China.
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Comparative Transcriptome and Phytochemical Analysis Provides Insight into Triterpene Saponin Biosynthesis in Seeds and Flowers of the Tea Plant (Camellia sinensis). Metabolites 2022; 12:metabo12030204. [PMID: 35323647 PMCID: PMC8949954 DOI: 10.3390/metabo12030204] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 02/22/2022] [Accepted: 02/22/2022] [Indexed: 12/20/2022] Open
Abstract
Triterpene saponins exhibit various biological and pharmacological activities. However, the knowledge on saponin biosynthesis in tea plants (Camellia sinensis L.) is still limited. In this work, tea flower and seed samples at different developmental stages and leaves were collected and analyzed with UPLC-PDA-MS and RNA sequencing for saponin determination and transcriptome comparison. The saponin content reached around 19% in the freshly mature seeds and 7% in the green flower buds, and decreased with the fruit ripeness and flower blooming. Almost no saponins were detected in leaf samples. PCA and KEGG analysis suggested that the gene expression pattern and secondary metabolism in TF1 and TS2 vs. leaf samples were significantly different. Weighted gene coexpression network analysis (WGCNA) uncovered two modules related to saponin content. The mevalonate (MVA) instead of 2-C-methyl-d-erythritol-4-phospate (MEP) pathway was responsible for saponin accumulation in tea plants, and 3-hydroxy-3-methylglutaryl-CoA synthase (HMGS), diphosphomevalonate decarboxylase (MVD) and isopentenyl diphosphate isomerase (IDI) may be the key enzymes involved in saponin biosynthesis in tea seeds and flowers. Moreover, ten transcription factors (TFs) were predicted to regulate saponin biosynthesis in the tea plant. Taken together, our study provides a global insight into the saponin biosynthesis and accumulation in the tea plant.
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14
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Deng M, Chen H, Xie L, Liu K, Zhang X, Li X. Tea saponins as natural emulsifiers and cryoprotectants to prepare silymarin nanoemulsion. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.113042] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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15
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Tsibranska S, Ivanova A, Tcholakova S, Denkov N. Structure and Undulations of Escin Adsorption Layer at Water Surface Studied by Molecular Dynamics. Molecules 2021; 26:6856. [PMID: 34833947 PMCID: PMC8618613 DOI: 10.3390/molecules26226856] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 11/03/2021] [Accepted: 11/09/2021] [Indexed: 11/24/2022] Open
Abstract
The saponin escin, extracted from horse chestnut seeds, forms adsorption layers with high viscoelasticity and low gas permeability. Upon deformation, escin adsorption layers often feature surface wrinkles with characteristic wavelength. In previous studies, we investigated the origin of this behavior and found that the substantial surface elasticity of escin layers may be related to a specific combination of short-, medium-, and long-range attractive forces, leading to tight molecular packing in the layers. In the current study, we performed atomistic molecular dynamics simulations of 441 escin molecules in a dense adsorption layer with an area per molecule of 0.49 nm2. We found that the surfactant molecules are less submerged in water and adopt a more upright position when compared to the characteristics determined in our previous simulations with much smaller molecular models. The number of neighbouring molecules and their local orientation, however, remain similar in the different-size models. To maintain their preferred mutual orientation, the escin molecules segregate into well-ordered domains and spontaneously form wrinkled layers. The same specific interactions (H-bonds, dipole-dipole attraction, and intermediate strong attraction) define the complex internal structure and the undulations of the layers. The analysis of the layer properties reveals a characteristic wrinkle wavelength related to the surface lateral dimensions, in qualitative agreement with the phenomenological description of thin elastic sheets.
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Affiliation(s)
- Sonya Tsibranska
- Department of Chemical and Pharmaceutical Engineering, Faculty of Chemistry and Pharmacy, University of Sofia, 1164 Sofia, Bulgaria; (S.T.); (S.T.); (N.D.)
| | - Anela Ivanova
- Department of Physical Chemistry, Faculty of Chemistry and Pharmacy, University of Sofia, 1164 Sofia, Bulgaria
| | - Slavka Tcholakova
- Department of Chemical and Pharmaceutical Engineering, Faculty of Chemistry and Pharmacy, University of Sofia, 1164 Sofia, Bulgaria; (S.T.); (S.T.); (N.D.)
| | - Nikolai Denkov
- Department of Chemical and Pharmaceutical Engineering, Faculty of Chemistry and Pharmacy, University of Sofia, 1164 Sofia, Bulgaria; (S.T.); (S.T.); (N.D.)
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16
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Deng F, Li K, Feng Q, Yang K, Huang F. Evaluation of frictional and rheological properties of choline/N-acetyl-l-proline ionic liquid modified with molecular aggregates of tea saponin derivatives. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116649] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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17
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Qian L, Yao Y, Li C, Xu F, Ying Y, Shao Z, Bao J. Pasting, gelatinization, and retrogradation characteristics related to structural properties of tea seed starches. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106701] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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18
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Zhang S, Tian L, Yi J, Zhu Z, Decker EA, McClements DJ. Mixed plant-based emulsifiers inhibit the oxidation of proteins and lipids in walnut oil-in-water emulsions: Almond protein isolate-camellia saponin. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2020.106136] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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19
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Han Z, Lian C, Ma Y, Zhang C, Liu Z, Tu Y, Ma Y, Gu Y. A frog-derived bionic peptide with discriminative inhibition of tumors based on integrin αvβ3 identification. Biomater Sci 2020; 8:5920-5930. [PMID: 32959810 DOI: 10.1039/d0bm01187h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aureins, natural active peptides extracted from skin secretions of Australian bell frogs, have become a research focus due to the antitumor effects caused by lysing cell membranes. However, clinical translation of Aureins is still limited by non-selective toxicity between normal and cancer cells. Herein, by structure-activity relationship analysis and rational linker design, a dual-function fusion peptide RA3 is designed by tactically fusing Aurein peptide A1 with strong anticancer activity, with a tri-peptide with integrin αvβ3-binding ability which was screened in our previous work. Rational design and selection of fusion linkers ensures α-helical conformation and active functions of this novel fusion peptide, inducing effective membrane rupture and selective apoptosis of cancer cells. The integrin binding and tumor recognition ability of the fusion peptide is further validated by fluorescence imaging in cell and mouse models, in comparison with the non-selective A1 peptide. Meanwhile, increased stability and superior therapeutic efficacy are achieved in vivo for the RA3 fusion peptide. Our study highlights that aided by computational simulation technologies, the biomimetic fusion RA3 peptide has been successfully designed, surmounting the poor tumor-selectivity of the natural defensive peptide, serving as a promising therapeutic agent for cancer treatment.
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Affiliation(s)
- Zhihao Han
- State Key Laboratory of Natural Medicines, Department of Biomedicine Engineering, School of Engineering, China Pharmaceutical University, Nanjing, No. 24 Tongjia Lane, 210009, China.
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20
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Ko J, Rho T, Yoon KD. Kaempferol tri- and tetrasaccharides from Camellia japonica seed cake and their inhibitory activities against matrix metalloproteinase-1 secretion using human dermal fibroblasts. Carbohydr Res 2020; 495:108101. [PMID: 32807360 DOI: 10.1016/j.carres.2020.108101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 07/09/2020] [Accepted: 07/09/2020] [Indexed: 11/17/2022]
Abstract
Eight kaempferol oligosaccharides were isolated and identified from Camellia japonica seed cake. The chemical structures of the isolates were determined by using chromatographic and spectroscopic techniques, such as high-performance liquid chromatography with a photodiode array detector (HPLC-PDA), one-dimensional (1H and 13C), and two-dimensional nuclear magnetic resonance (1H-1H COSY, HSQC and HMBC), ESI-Q-TOF-MS, and optical rotation. To evaluate the anti-aging efficacy of kaempferol oligosaccharides for cosmetic use, the MMP-1 inhibitory effects of the isolates were studied using human dermal fibroblasts which were cultured in HaCaT cell-conditioned media. The MMP-1 inhibitory assay results revealed that kaempferol-3-O-β-d-xylopyranosyl-(1 → 3)-α-l-rhamnopyranosyl-(1 → 6)-O-β-d-glucopyranosyl-(1 → 2)-O-β-d-glucopyranoside showed the most potent MMP-1 inhibitory activity. The basal level inhibition was 50 ppm, which indicated that C. japonica seed cake is a promising material for the development of anti-aging skin cosmetics.
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Affiliation(s)
- Jaeyoung Ko
- Amorepacific Co. R&D Unit, 314-1 Bora-dong, Giheung-gu, Yongin-si, Gyeonggi-do, 17074, Republic of Korea
| | - Taewoong Rho
- College of Pharmacy and Integrated Research Institute of Pharmaceutical Sciences, The Catholic University of Korea, Bucheon, 14662, Republic of Korea
| | - Kee Dong Yoon
- College of Pharmacy and Integrated Research Institute of Pharmaceutical Sciences, The Catholic University of Korea, Bucheon, 14662, Republic of Korea.
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21
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Qiu Y, He D, Yang J, Ma L, Zhu K, Cao Y. Kaempferol separated from Camellia oleifera meal by high-speed countercurrent chromatography for antibacterial application. Eur Food Res Technol 2020; 246:2383-2397. [PMID: 32837313 PMCID: PMC7415335 DOI: 10.1007/s00217-020-03582-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 07/24/2020] [Accepted: 07/25/2020] [Indexed: 01/06/2023]
Abstract
Natural biologically active substances have received continuous attention for the potentially beneficial health properties against chronic diseases. In this study, bacteriostatic active substance from Camellia oleifera meal, which is a major by-product of the Camellia oil processing industry, were extracted with continuous phase change extraction (CPCE) method and separated by HSCCC. Compared with traditional extraction methods, CPCE possessed higher extraction efficiency. Two main substances were separated and purified (above 90.0%). The structure of them were further identified by UV, LC-ESI-MS-MS, 1H-NMR, and 13C-NMR as flavonoids F2 kaempferol 3-O-[β-d-glucopyranosyl-(1 → 2)-α-l-rhamnopyranosyl-(1 → 6)]-β-d-glucopyranoside and J2 kaempferol 3-O-[β-d-xylopyranosyl-(1 → 2)-α-l-rhamnopyranosyl-(1 → 6)]-β-d-glucopyranoside for the first time in C. Oleifera meal. The results of antibacterial activity measurement showed that both compounds have excellent antibacterial activity. And the antibacterial stability of F2 were finally confirmed: F2 showed broad spectrum antibacterial activity against Escherichia coli, Staphylococcus aureus, Salmonella enteriditis, Bacillus thuringiensis, Aspergillus niger and Rhizopus nigricans. Besides, F2 exhibited relatively high stable property even at high temperature, acid and metal ion solutions. The findings of this work suggest the possibility of employing C. oleifera meal as an attractive source of health-promoting compounds, and at the same time facilitate its high-value reuse and reduction of environmental burden.
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Affiliation(s)
- Yuanxin Qiu
- School of Light Industry and Food, Zhongkai University of Agricultural and Engineering, Guangzhou, 510220 China
| | - Di He
- School of Light Industry and Food, Zhongkai University of Agricultural and Engineering, Guangzhou, 510220 China
| | - Jingxian Yang
- School of Light Industry and Food, Zhongkai University of Agricultural and Engineering, Guangzhou, 510220 China
| | - Lukai Ma
- School of Light Industry and Food, Zhongkai University of Agricultural and Engineering, Guangzhou, 510220 China
| | - Kaiqi Zhu
- School of Light Industry and Food, Zhongkai University of Agricultural and Engineering, Guangzhou, 510220 China
| | - Yong Cao
- School of Food Science and Engineering, South China Agricultural University, No. 483 Wushan Road, Wushan Street, Tianhe District, Guangzhou, 510000 China
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22
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Fan L, He Y, Xu Y, Li P, Zhang J, Zhao J. Triterpenoid saponins in tea ( Camellia sinensis) plants: biosynthetic gene expression, content variations, chemical identification and cytotoxicity. Int J Food Sci Nutr 2020; 72:308-323. [PMID: 32746657 DOI: 10.1080/09637486.2020.1798891] [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] [Indexed: 12/30/2022]
Abstract
Very little is known about saponins in tea and their biosynthesis in tea plants despite of the importance. Here, we studied tea saponins and their biosynthesis genes. Saponins were promptly recovered in tea infusions. Cytotoxicity of tea saponin extracts on human tongue squamous and hepatocellular carcinoma lines showed respective IC50 values of 29.2 and 17.5 μg/mL, which may be attributable to over 40 saponins identified in green tea. Saponin contents varied in shoot tips of 42 tea plant varieties but did not change drastically during tea processing. Saponin biosynthetic gene expression was consistent with its contents in plant tissues. Thus, plant tips produce significant amounts of saponins, which are stable during tea processing, and ready to be recovered to tea infusions to provide potent health benefits to consumers. This study paves a road towards clarifying the biosynthesis and genetic improvement of saponins in tea plants.
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Affiliation(s)
- Limao Fan
- College of Tea and Food Science and Technology, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, China
| | - Yufeng He
- College of Tea and Food Science and Technology, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, China
| | - Yujie Xu
- College of Tea and Food Science and Technology, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, China
| | - Penghui Li
- College of Tea and Food Science and Technology, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, China
| | - Jinsong Zhang
- College of Tea and Food Science and Technology, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, China
| | - Jian Zhao
- College of Tea and Food Science and Technology, State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, China
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23
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Cho HM, Ha TKQ, Doan TP, Dhodary B, An JP, Lee BW, Yang JL, Oh WK. Neuroprotective Effects of Triterpenoids from Camellia japonica against Amyloid β-Induced Neuronal Damage. JOURNAL OF NATURAL PRODUCTS 2020; 83:2076-2086. [PMID: 32569471 DOI: 10.1021/acs.jnatprod.9b00964] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Alzheimer's disease (AD), a neurocognitive impairment affecting human mental capacity, is related to the accumulation of amyloid-β peptide (Aβ) and the hyperphosphorylation of tau protein. In addition to modern therapies approved for AD treatment, natural products with antioxidant and anti-inflammatory properties have been studied for their potential to prevent AD pathogenesis. Six new noroleanane triterpenoids from the fruit peels of Camellia japonica were isolated, and their structures were determined by diverse spectroscopic methods. The neuroprotective effects of the six new compounds were tested against Aβ-induced neurotoxicity and neuroinflammation in mouse hippocampal and microglial cells. In the model of HT22-transfected cells, compounds 1-4 showed strongly neuroprotective effects via antioxidant response element gene activation and decreased the level of glutamate uptake. Compounds 1-4 also appeared to have strong inhibitory effects on NO production in Aβ1-42-transfected BV2 microglial cells. A docking simulation study was used to explain the inhibitory effects of compounds 1-4 on β-secretase 1 (BACE1). Noroleanane triterpenoids 1-4 had potential neuroprotective and anti-inflammatory effects against Aβ-induced neuronal damage. The structure-activity relationships of the 30 oleanane triterpenoids from C. japonica were assessed in a model of Aβ1-42-transfected HT22 cells.
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Affiliation(s)
- Hyo-Moon Cho
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Thi-Kim-Quy Ha
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
- College of Natural Sciences, Cantho University, Campus II, Cantho City, Vietnam
| | - Thi-Phuong Doan
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Basanta Dhodary
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Jin-Pyo An
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Ba-Wool Lee
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Jun-Li Yang
- Key Laboratory of Chemistry of Northwestern Plant Resources of CAS and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Won-Keun Oh
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
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24
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Long J, Song J, Zhang X, Deng M, Xie L, Zhang L, Li X. Tea saponins as natural stabilizers for the production of hesperidin nanosuspensions. Int J Pharm 2020; 583:119406. [PMID: 32387309 DOI: 10.1016/j.ijpharm.2020.119406] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 04/27/2020] [Accepted: 05/03/2020] [Indexed: 12/26/2022]
Abstract
Tea saponins (TS), a novel multifunctional stabilizer, were explored to stabilize the nanosuspensions. The purpose of this study was to investigate the effect of TS on the stability and redispersibility of nanosuspensions. In present work, hesperidin (HDN), a poorly soluble drug, was used as a model drug. HDN nanosuspensions (HDN-NS) with particle size of 250-270 nm were prepared by high-speed shearing and high-pressure homogenization. The zeta potential of HDN-NS was -23.16 ± 1.12 mV. Compared with traditional stabilizers, TS were superior in stabilization efficiency at low concentrations. Nanosuspensions freeze-dried powder using TS and lactose as cryoprotectants had good redispersibility, and the average particle size was 266.5 ± 9.0 nm after reconstitution. TS and lactose can effectively prevent the irreversible agglomeration of HDN-NS during freeze-drying. The dissolution was enhanced owing to particle size reduction. Transmission electron microscopy (TEM) and Scanning electron microscopy (SEM) results showed that HDN nanocrystals were irregularly lumpy. The chemical structure and crystal state of HDN had not significantly changed during production. In conclusion, TS have the potential to stabilize and disperse nanosuspensions and provide a promising strategy for the development of poorly soluble drugs.
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Affiliation(s)
- Jiaying Long
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 610072, PR China
| | - Jiawen Song
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 610072, PR China
| | - Xumin Zhang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 610072, PR China
| | - Mao Deng
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 610072, PR China
| | - Long Xie
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 610072, PR China
| | - Linlin Zhang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 610072, PR China
| | - Xiaofang Li
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 610072, PR China.
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25
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Zhao J, Li P, Xia T, Wan X. Exploring plant metabolic genomics: chemical diversity, metabolic complexity in the biosynthesis and transport of specialized metabolites with the tea plant as a model. Crit Rev Biotechnol 2020; 40:667-688. [PMID: 32321331 DOI: 10.1080/07388551.2020.1752617] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The diversity and complexity of secondary metabolites in tea plants contribute substantially to the popularity of tea, by determining tea flavors and their numerous health benefits. The most significant characteristics of tea plants are that they concentrate the complex plant secondary metabolites into one leaf: flavonoids, alkaloids, theanine, volatiles, and saponins. Many fundamental questions regarding tea plant secondary metabolism remain unanswered. This includes how tea plants accumulate high levels of monomeric galloylated catechins, unlike the polymerized flavan-3-ols in most other plants, as well as how they are evolved to selectively synthesize theanine and caffeine, and how tea plants properly transport and store these cytotoxic products and then reuse them in defense. Tea plants coordinate many metabolic pathways that simultaneously take place in young tea leaves in response to both developmental and environmental cues. With the available genome sequences of tea plants and high-throughput metabolomic tools as great platforms, it is of particular interest to launch metabolic genomics studies using tea plants as a model system. Plant metabolic genomics are to investigate all aspects of plant secondary metabolism at the genetic, genome, and molecular levels. This includes plant domestication and adaptation, divergence and convergence of secondary metaboloic pathways. The biosynthesis, transport, storage, and transcriptional regulation mechanisms of all metabolites are of core interest in the plant as a whole. This review highlights relevant contexts of metabolic genomics, outstanding questions, and strategies for answering them, with aim to guide future research for genetic improvement of nutrition quality for healthier plant foods.
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Affiliation(s)
- Jian Zhao
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, China
| | - Penghui Li
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, China
| | - Tao Xia
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, China
| | - Xiaochun Wan
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, China
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26
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Cui C, Yang Y, Zhao T, Zou K, Peng C, Cai H, Wan X, Hou R. Insecticidal Activity and Insecticidal Mechanism of Total Saponins from Camellia oleifera. Molecules 2019; 24:molecules24244518. [PMID: 31835551 PMCID: PMC6943515 DOI: 10.3390/molecules24244518] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 12/06/2019] [Accepted: 12/08/2019] [Indexed: 11/16/2022] Open
Abstract
Chemical pesticides are commonly used during the cultivation of agricultural products to control pests and diseases. Excessive use of traditional pesticides can cause environmental and human health risks. There are ongoing searches for new plant-derived pesticides to reduce the use of chemical pesticides. In this study, tea saponin extracts of different purities were extracted from Camellia oleifera seeds using AB-8 macroporous resin and gradient elution with ethanol. The insecticidal effects of the tea saponin extracts were evaluated by contact toxicity tests and stomach toxicity tests using the lepidopteran pest of tea plantation, Ectropis obliqua. The total saponins extracted using 70% ethanol showed strong contact toxicity (LC50 = 8.459 mg/L) and stomach toxicity (LC50 = 22.395 mg/L). In-depth mechanistic studies demonstrated that tea saponins can disrupt the waxy layer of the epidermis, causing serious loss of water, and can penetrate the inside of the intestine of E. obliqua. After consumption of the tea saponins, the intestinal villi were shortened and the cavities of the intestinal wall were disrupted, which resulted in larval death. This study highlights the potential of tea saponins as a natural, plant-derived pesticide for the management of plant pests.
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Affiliation(s)
| | | | | | | | | | | | | | - Ruyan Hou
- Correspondence: ; Tel.: +86-551-65786765
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27
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Wen Y, Meyer SLF, MacDonald MH, Zheng L, Jing C, Chitwood DJ. Nematotoxicity of Paeonia spp. Extracts and Camellia oleifera Tea Seed Cake and Extracts to Heterodera glycines and Meloidogyne incognita. PLANT DISEASE 2019; 103:2191-2198. [PMID: 31293210 DOI: 10.1094/pdis-09-18-1663-re] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Tea-oil camellia (Camellia oleifera) is grown for tea seed oil production, with tea seed cake produced as a byproduct. Rather than disposing of the cake, agricultural uses increase the value of oil production. Constituents of C. oleifera are also utilized for traditional Chinese medicine, as are compounds produced by tree peony roots. Consequently, the unused C. oleifera cake, and stems from two tree peony species, Paeonia rockii and Paeonia suffruticosa, were studied for compounds antagonistic to soybean cyst nematode (Heterodera glycines) and root-knot nematode (Meloidogyne incognita). Extracts from C. oleifera cake and P. rockii stems suppressed hatch and were nematotoxic to second-stage juveniles (J2) of both nematode species. P. rockii extracts were more effective than P. suffruticosa extracts for decreasing M. incognita hatch and J2 viability. In greenhouse trials with soybean (Glycine max 'Essex'), powdered C. oleifera cake applied as a soil amendment suppressed H. glycines cysts/g root by up to 66% compared with nonamended controls. These results indicate that the extracts and cake contain compounds active against H. glycines and M. incognita, with activity varying between the two Paeonia species. C. oleifera tea seed cake, and constituents of the cake or of P. rockii, are candidates for further studies on management of these nematodes.
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Affiliation(s)
- Yanhua Wen
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Susan L F Meyer
- United States Department of Agriculture, Agricultural Research Service, Mycology and Nematology Genetic Diversity and Biology Laboratory, Beltsville, MD 20705, U.S.A
| | - Margaret H MacDonald
- United States Department of Agriculture, Agricultural Research Service, Mycology and Nematology Genetic Diversity and Biology Laboratory, Beltsville, MD 20705, U.S.A
| | - Liuchun Zheng
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Chunyue Jing
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, College of Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - David J Chitwood
- United States Department of Agriculture, Agricultural Research Service, Mycology and Nematology Genetic Diversity and Biology Laboratory, Beltsville, MD 20705, U.S.A
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28
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Fu J, Liu G, Yang M, Wang X, Chen X, Chen F, Yang Y. Isolation and functional analysis of squalene synthase gene in tea plant Camellia sinensis. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 142:53-58. [PMID: 31272035 DOI: 10.1016/j.plaphy.2019.06.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 06/21/2019] [Accepted: 06/21/2019] [Indexed: 05/27/2023]
Abstract
Tea contains high quantities and diverse types of triterpenoids, particularly in the form of saponins. However, little is yet known about the molecular basis of triterpenoid biosynthesis in tea plant. Here we report on isolation and functional analysis of squalene synthase (SQS) gene from tea plant (Camellia sinensis var. sinensis), which controls the biosynthesis of triterpenoids precursor. First, a full-length cDNA of squalene synthase, designated CsSQS, was isolated from tea plant. The protein is highly homologous to SQSs from other plants. Using CsSQS-reporter assays, CsSQS was demonstrated to be endoplasmic reticulum membrane-bound. The coding region of CsSQS excluding transmemberane sequence was expressed in Escherichia coli. Recombinant CsSQS catalyzed the formation of squalene using farnesyl-pyrophosphate (FPP) as substrate with NADPH and Mg2+. In tea plant leaves, CsSQS expression was significantly induced by both herbivore and mechanical damages. Consistent with the stronger induction of CsSQS expression by mechanical damage than herbivory, tea plants injured mechanically released squalene as a volatile compound, which however was not detected from herbivore-damaged tea plants. Furthermore, it was found that the flowers of another tea plant cultivar Camellia sinensis var. assamica contain higher concentrations of squalene than the cultivar sinensis, indicating variations among tea plant varieties. With the identification and molecular characterization of squalene synthase in tea plant, next, we can ask the questions about the roles of squalene as a volatile product as well as a precursor for triterpenoids, which may promote product development from diverse tea materials and mining of excellent tea germplasm resources.
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Affiliation(s)
- Jianyu Fu
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, 310008, China; Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture and Rural Affairs, Hangzhou, 310008, China; Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
| | - Guanhua Liu
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, 310008, China; Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture and Rural Affairs, Hangzhou, 310008, China; Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Mei Yang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, 310008, China; Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture and Rural Affairs, Hangzhou, 310008, China; Graduate School of Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Xinchao Wang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, 310008, China; National Center for Tea Plant Improvement, Hangzhou, 310008, China
| | - Xinlu Chen
- Department of Plant Sciences, University of Tennessee, Knoxville, TN, 37996, USA
| | - Feng Chen
- Department of Plant Sciences, University of Tennessee, Knoxville, TN, 37996, USA
| | - Yajun Yang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, 310008, China; National Center for Tea Plant Improvement, Hangzhou, 310008, China.
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29
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Ge G, Jiao W, Cui C, Liao G, Sun J, Hou R. Thiamethoxam Metabolism and Metabolic Effects in Cell Suspension Culture of Tea ( Camellia sinensis L.). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:7538-7546. [PMID: 31180663 DOI: 10.1021/acs.jafc.8b07011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Thiamethoxam (TMX) has already been proven to have a physiological effect in plant tissue or cell expect for the insecticidal activity. In our previous study, TMX was verified to be metabolized by tea cells in either a suspension culture or tea plant into several metabolites. Here, tea cell suspension cultures were treated for 45 days to investigate the metabolite effects in both the tea cells and the culture supernatants by nontargeted metabolomics. Using multivariate analysis (PCA and OPLS-DA), all treatment and control groups could be clearly separated. Inside the cells, 113 metabolites were found to be up-regulated while 122 were down-regulated, when compared with untreated cells. In the culture supernatant, there were 128 up-regulated and 35 down-regulated metabolites, compared to untreated cultures. KEGG searches revealed that the alanine, aspartate, and glutamate metabolic pathways were strongly affected by TMX metabolism within the tea cell. Molecular docking models showed that (i) 4-aminobutyrate aminotransferase may be related to the formation of 2-chloro-thiazole-5-carboxylic acid and (ii) 3'(2'),5'-bisphosphate nucleotidase may be able to interact with TMX. This study can help us to understand the interaction mechanism of pesticides with plant cells.
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Affiliation(s)
- Guoqin Ge
- State Key Laboratory of Tea Plant Biology and Utilization, and Province Key Lab of Analysis and Detection for Food Safety, School of Tea and Food Science & Technology , Anhui Agricultural University , Hefei , 230036 , People's Republic of China
| | - Weiting Jiao
- State Key Laboratory of Tea Plant Biology and Utilization, and Province Key Lab of Analysis and Detection for Food Safety, School of Tea and Food Science & Technology , Anhui Agricultural University , Hefei , 230036 , People's Republic of China
- Key Laboratory of Agri-food Safety of Anhui Province, School of Resource & Environment , Anhui Agricultural University , Hefei 230036 , People's Republic of China
| | - Chuanjian Cui
- State Key Laboratory of Tea Plant Biology and Utilization, and Province Key Lab of Analysis and Detection for Food Safety, School of Tea and Food Science & Technology , Anhui Agricultural University , Hefei , 230036 , People's Republic of China
| | - Guangqin Liao
- State Key Laboratory of Tea Plant Biology and Utilization, and Province Key Lab of Analysis and Detection for Food Safety, School of Tea and Food Science & Technology , Anhui Agricultural University , Hefei , 230036 , People's Republic of China
| | - Jun Sun
- State Key Laboratory of Tea Plant Biology and Utilization, and Province Key Lab of Analysis and Detection for Food Safety, School of Tea and Food Science & Technology , Anhui Agricultural University , Hefei , 230036 , People's Republic of China
| | - Ruyan Hou
- State Key Laboratory of Tea Plant Biology and Utilization, and Province Key Lab of Analysis and Detection for Food Safety, School of Tea and Food Science & Technology , Anhui Agricultural University , Hefei , 230036 , People's Republic of China
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30
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Wang D, Huo R, Cui C, Gao Q, Zong J, Wang Y, Sun Y, Hou R. Anticancer activity and mechanism of total saponins from the residual seed cake of Camellia oleifera Abel. in hepatoma-22 tumor-bearing mice. Food Funct 2019; 10:2480-2490. [DOI: 10.1039/c9fo00069k] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Total saponins from the residual seed cake of Camellia oleifera Abel. exhibited beneficial properties on anticancer activity in hepatoma-22 tumor-bearing mice and represents a promising species for food applications.
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Affiliation(s)
- Dongxu Wang
- State Key Laboratory of Tea Plant Biology and Utilization; School of Tea and Food Science & Technology
- International Joint Laboratory on Tea Chemistry and Health Effects
- Anhui Agricultural University
- Hefei
- China
| | - Ruiwen Huo
- State Key Laboratory of Tea Plant Biology and Utilization; School of Tea and Food Science & Technology
- International Joint Laboratory on Tea Chemistry and Health Effects
- Anhui Agricultural University
- Hefei
- China
| | - Chuanjian Cui
- State Key Laboratory of Tea Plant Biology and Utilization; School of Tea and Food Science & Technology
- International Joint Laboratory on Tea Chemistry and Health Effects
- Anhui Agricultural University
- Hefei
- China
| | - Qiang Gao
- State Key Laboratory of Tea Plant Biology and Utilization; School of Tea and Food Science & Technology
- International Joint Laboratory on Tea Chemistry and Health Effects
- Anhui Agricultural University
- Hefei
- China
| | - Jianfa Zong
- State Key Laboratory of Tea Plant Biology and Utilization; School of Tea and Food Science & Technology
- International Joint Laboratory on Tea Chemistry and Health Effects
- Anhui Agricultural University
- Hefei
- China
| | - Yijun Wang
- State Key Laboratory of Tea Plant Biology and Utilization; School of Tea and Food Science & Technology
- International Joint Laboratory on Tea Chemistry and Health Effects
- Anhui Agricultural University
- Hefei
- China
| | - Yue Sun
- State Key Laboratory of Tea Plant Biology and Utilization; School of Tea and Food Science & Technology
- International Joint Laboratory on Tea Chemistry and Health Effects
- Anhui Agricultural University
- Hefei
- China
| | - Ruyan Hou
- State Key Laboratory of Tea Plant Biology and Utilization; School of Tea and Food Science & Technology
- International Joint Laboratory on Tea Chemistry and Health Effects
- Anhui Agricultural University
- Hefei
- China
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