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Zhou Y, He Y, Zhu Z. Understanding of formation and change of chiral aroma compounds from tea leaf to tea cup provides essential information for tea quality improvement. Food Res Int 2023; 167:112703. [PMID: 37087269 DOI: 10.1016/j.foodres.2023.112703] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 03/08/2023] [Accepted: 03/14/2023] [Indexed: 03/19/2023]
Abstract
Abundant secondary metabolites endow tea with unique quality characteristics, among which aroma is the core component of tea quality. The ratio of chiral isomers of aroma compounds greatly affects the flavor of tea leaves. In this paper, we review the progress of research on chiral aroma compounds in tea. With the well-established GC-MS methods, the formation of, and changes in, the chiral configuration of tea aroma compounds during the whole cycle of tea leaves from the plant to the tea cup has been studied in detail. The ratio of aroma chiral isomers varies among different tea varieties and finished teas. Enzymatic reactions involving tea aroma synthases and glycoside hydrolases participate the formation of aroma compound chiral isomers during tea tree growth and tea processing. Non-enzymatic reactions including environmental factors such as high temperature and microbial fermentation involve in the change of aroma compound chiral isomers during tea processing and storage. In the future, it will be interesting to determine how changes in the proportions of chiral isomers of aroma compounds affect the environmental adaptability of tea trees; and to determine how to improve tea flavor by modifying processing methods or targeting specific genes to alter the ratio of chiral isomers of aroma compounds.
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Affiliation(s)
- Ying Zhou
- Hainan Institute, Zhejiang University, Yazhou District, Sanya 572025, China.
| | - Yunchuan He
- Hainan Institute, Zhejiang University, Yazhou District, Sanya 572025, China; College of Agriculture and Biotechnology, Zhejiang University, Xihu District, Hangzhou 310030, China
| | - Zengrong Zhu
- Hainan Institute, Zhejiang University, Yazhou District, Sanya 572025, China; College of Agriculture and Biotechnology, Zhejiang University, Xihu District, Hangzhou 310030, China
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Gazim ZC, Valle JS, Carvalho dos Santos I, Rahal IL, Silva GCC, Lopes AD, Ruiz SP, Faria MGI, Piau Junior R, Gonçalves DD. Ethnomedicinal, phytochemical and pharmacological investigations of Baccharis dracunculifolia DC. (ASTERACEAE). Front Pharmacol 2022; 13:1048688. [PMID: 36518668 PMCID: PMC9742423 DOI: 10.3389/fphar.2022.1048688] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 11/14/2022] [Indexed: 09/29/2023] Open
Abstract
Baccharis dracunculifolia DC (Lamiaceae) (Asteraceae) is found in South America, mainly in Argentina, Brazil, Bolivia, Paraguay and Uruguay. Folk medicine is used as a sedative, hypotensive, bronchodilator, cardiovascular disorders, anti-flu, and also in skin wounds. Considered the main source of green propolis, which increases the pharmacological interest in this species. It is also known as a "benefactor" plant facilitating the development of other plant species around it, being indicated for the recovery of degraded areas. This species has been studied for decades in order to isolate and identify the active principles present in the aerial parts (leaves and flowers) and roots. The present study consists of a review of the scientific literature addressing the ethnobotanical, ethnomedicinal, phytochemical, pharmacological and potential cytotoxic effects of the B. dracunculifolia species. In this survey, we sought to investigate issues related to the botanical and geographic description of the species, the ethnobotanical uses, as well as the phytochemical studies of the essential oil, extracts and green propolis obtained from the aerial parts and roots of B. dracunculifolia. Using high precision analytical tools, numerous compounds have already been isolated and identified from leaves and flowers such as the flavonoids: naringenin, acacetin, dihydrokaempferol, isosakuranetin and kaempferide; phenolic acids: p-coumaric, dihydrocoumaric, ferulic (E)-cinnamic, hydroxycinnamic, gallic, caffeic, and several caffeoylquinic acids derivatives; phenolic acids prenylated: artepillin C, baccharin, drupanin; the glycosides dracuculifosides and the pentacyclic triterpenoids: Baccharis oxide and friedelanol. The predominant class in the essential oil of leaves and flowers are terpenoids comprising oxygenated monoterpenes and sesquiterpenes, highlighting the compounds nerolidol, spathulenol, germacrene D and bicyclogermacrene. These compounds give the species high antimicrobial, antioxidant, antitumor, analgesic, immunomodulatory and antiparasitic potential, making this species a promising herbal medicine. In vitro toxicity assays with B. dracunculifolia extract showed low or no cytotoxicity. However, in vivo analyses with high doses of the aqueous extract resulted in genotoxic effects, which leads us to conclude that the toxicity of this plant is dose-dependent.
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Affiliation(s)
- Zilda Cristiani Gazim
- Chemistry Laboratory of Natural Products, Graduate Program in Animal Science and Biotechnology Applied to Agriculture, Paranaense University, Umuarama, Brazil
- Preventive Veterinary Medicine and Public Health Laboratory, Postgraduate Program in Animal Science with an Emphasis on Bioactive Products, Paranaense University, Umuarama, Brazil
| | - Juliana Silveira Valle
- Preventive Veterinary Medicine and Public Health Laboratory, Postgraduate Program in Animal Science with an Emphasis on Bioactive Products, Paranaense University, Umuarama, Brazil
- Molecular Biology Laboratory, Graduate Program in Animal Science and Biotechnology Applied to Agriculture, Paranaense University, Umuarama, Brazil
| | - Isabela Carvalho dos Santos
- Preventive Veterinary Medicine and Public Health Laboratory, Postgraduate Program in Animal Science with an Emphasis on Bioactive Products, Paranaense University, Umuarama, Brazil
| | - Isabelle Luiz Rahal
- Chemistry Laboratory of Natural Products, Graduate Program in Animal Science and Biotechnology Applied to Agriculture, Paranaense University, Umuarama, Brazil
| | - Gabriela Catuzo Canonico Silva
- Chemistry Laboratory of Natural Products, Graduate Program in Animal Science and Biotechnology Applied to Agriculture, Paranaense University, Umuarama, Brazil
| | - Ana Daniela Lopes
- Agricultural Microbiology and Nematology Laboratory, Graduate Program in Biotechnology Applied to Agriculture, Paranaense University, Umuarama, Brazil
| | - Suelen Pereira Ruiz
- Laboratory of Biotechnology of Plant Products and Microorganisms, Postgraduate Program in Biotechnology Applied to Agriculture, Paranaense University, Umuarama, Brazil
| | - Maria Graciela Iecher Faria
- Laboratory of Biotechnology of Plant Products and Microorganisms, Postgraduate Program in Biotechnology Applied to Agriculture, Paranaense University, Umuarama, Brazil
| | - Ranulfo Piau Junior
- Preventive Veterinary Medicine and Public Health Laboratory, Postgraduate Program in Animal Science with an Emphasis on Bioactive Products, Paranaense University, Umuarama, Brazil
| | - Daniela Dib Gonçalves
- Preventive Veterinary Medicine and Public Health Laboratory, Postgraduate Program in Animal Science with an Emphasis on Bioactive Products, Paranaense University, Umuarama, Brazil
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