Abstract
Theaflavin (TF), a chemical component important in measuring the quality of fermented tea, has a strong natural antioxidant effect and many pharmacological functions. Enzymatic oxidation has become a widely used method for preparing TFs at the current research stage. Using plant exogenous polyphenol oxidase (PPO) to enzymatically synthesize TFs can significantly increase yield and purity. In this study, tea polyphenols were used as the reaction substrate to discuss the optimal synthesis conditions of potato PPO enzymatic synthesis of theaflavins and the main products of enzymatic synthesis of TFs. The optimal enzymatic synthesis conditions were as follows: pH of the reaction system was 5.5, reaction time was 150 min, substrate concentration was 6.0 mg/mL, reaction temperature was 20 °C, and the maximum amount of TFs produced was 651.75 μg/mL. At the same time, high-performance liquid chromatography was used to determine the content of theaflavins and catechins in the sample to be tested, and the dynamic changes and correlations of the main catechins and theaflavins in the optimal enzymatic system were analyzed. The results showed that epicatechin (EC), epigallocatechin (EGC), epicatechin gallate (ECG), and epigallocatechin gallate (EGCG) are all the main substrates synthesis of TFs. The main substrate of TFs and its strongest enzymatic catalytic effect on EGCG make theaflavin-3,3′-digallate (TFDG) the most important synthetic monomer. In this study, theaflavins were synthesized by polyphenol oxidase catalysis, which laid a foundation for industrialization of theaflavins.
Similar content being viewed by others
Abbreviations
- TF:
-
Theaflavin
- PPO:
-
Polyphenol oxidase
- EC:
-
Epicatechin
- EGC:
-
Epigallocatechin
- ECG:
-
Epicatechin gallate
- EGCG:
-
Epigallocatechin gallate
- TFs:
-
Theaflavins
- TFDG:
-
Theaflavin-3,3′-digallate
- TF-3-G:
-
Theaflavin-3-gallate
- TF-3′-G:
-
Theaflavin-3′-gallate
References
Zhang J, Cui H, Jiang H, Xiong C (2019) Rapid determination of theaflavins by HPLC with a new monolithic column. Czech J Food Sci 37(2):112–119. https://doi.org/10.17221/213/2018-CJFS
Li B, Vik SB, Tu Y (2012) Theaflavins inhibit the ATP synthase and the respiratory chain without increasing superoxide production. J Nutr Biochem. https://doi.org/10.1016/j.jnutbio.2011.05.001
Jianping S, Qingyan M, Yongyuan L (2016) Theaflavins suppress tumor growth and metastasis via the blockage of the STAT3 pathway in hepatocellular carcinoma. OncoTargets Ther 9:4265–4275 (CNKI:SUN:WXQG.0.2011-01-005)
de Oliveira A, Prince D, Lo C-Y, Chu T-C (2015) Antiviral activity of theaflavin digallate against herpes simplex virus type 1. Antiviral Res. https://doi.org/10.1016/j.antiviral.2015.03.009
Wang HX, Sun JT, Wen-Ping LV, Chao-Yang MA, Xia WS (2011) Research progress on preparation, analysis, separation and function of theaflavins. J Food Sci Biotechnol. https://doi.org/10.2147/OTT.S102858
Redfearn DP, Trim GM, Skane AC, Klein GJ (2005) Esophageal temperature monitoring during radiofrequency ablation of atrial fibrillation. J Cardiovasc Electrophysiol. https://doi.org/10.1111/j.1540-8167.2005.40825.x
Caixia L, Jingrui Y, Guangying W, He N, Haihang L (2017) Research on the synthesis of theaflavins catalyzed by polyphenol oxidase. Chin J Plant Physiol 08:1359–1364. https://doi.org/10.13592/j.cnki.ppj.2017.0095
Sufang L, Shengpeng W (2015) Research on tea pigment and its biological activity function. Hubei Agric Sci 24:6117–6119. https://doi.org/10.14088/j.cnki.issn0439-8114.2015.24.002
Huang Yingjie Wu, Mengyao YY, Youyi H (2017) The effect of different reaction conditions on the synthesis of theaflavins by polyphenol oxidase from Mengku large leaf species. Food Sci 22:54–59
Matsuo Y, Tadakuma F, Shii T, Tanaka T (2015) Selective oxidation of pyrogallol-type catechins with unripe fruit homogenate of Citrus unshiu and structural revision of oolongtheanins. Tetrahedron. https://doi.org/10.1016/j.tet.2015.03.016
van der Westhuizen M, Steenkamp L, Steenkamp P, Apostolides Z (2015) Alternative pathway implicated as an influencing factor in the synthesis of theaflavin. Biocatal Biotransform. https://doi.org/10.3109/10242422.2016.1163341
Lei S, Xie M, Hu B, Zeng X (2017) Effective synthesis of theaflavin-3,3′-digallate with epigallocatechin-3-O-gallate and epicatechin gallate as substrates by using immobilized pear polyphenol oxidase. Int J Biol Macromol. https://doi.org/10.1016/j.ijbiomac.2016.10.072
Shenghu C (2016) Isolation and purification of polyphenol oxidase isoenzymes from Longjing No. 43 tea tree and the properties of PPO III-2 and PPO V-3. Huazhong Agricultural University. http://gffiy28995338bdc041dasxx5k9pnf5xvn6xqw.fffb.suse.cwkeji.cn:999/KCMS/detail/detail.aspx?dbname=CMFD201701&filename=1016155372.nh. Accessed 7 Apr 2022
Lei X (2014) Extraction, isolation and purification of tea tree polyphenol oxidase and its partial enzyme properties. Huazhong Agricultural University. http://gffiy28995338bdc041dasxx5k9pnf5xvn6xqw.fffb.suse.cwkeji.cn:999/KCMS/detail/detail.aspx?dbname=CMFD201402&filename=1014213740.nh. Accessed 7 Apr 2022
Teng J et al (2017) Purification, characterization and enzymatic synthesis of theaflavins of polyphenol oxidase isozymes from tea leaf (Camellia sinensis). LWT 84:263–270. https://doi.org/10.1016/j.lwt.2017.05.065
Health U D O, Services H (2001) Guidance for industry, bioanalytical method validation [J]. http://www.fda.gov/cder/guidance/index.htm. Accessed 8 Apr 2022
Sitheeque MAM, Panagoda GJ, Yau J, Samaranayake LP (2009) Antifungal activity of black tea polyphenols (catechins and theaflavins) against Candida species. Chemotherapy 55(3):189–196
Subramanian N, Venkatesh P, Ganguli S, Sinkar VP (1999) Role of polyphenol oxidase and peroxidase in the generation of black tea theaflavins. J Agric Food Chem 47(7):2571
Alastair R (1983) Effects of physical and chemical conditions on the in vitro oxidation of tea leaf catechins. Phytochem 22(4):889–896
Yiyi C, Guanghui J (1993) Theoretical discussion on temperature-variable fermentation of black tea. Tea Sci 02:81–86
Tanmoy S, Vijayakumar C, Shrilekha D, Adinpunya M (2015) Assessing biochemical changes during standardization of fermentation time and temperature for manufacturing quality black tea. J Food Sci Technol 52(4):2387–2393
Weixiang X, Chun Li, Hui X (1992) A preliminary study on the formation and degradation of black tea pigments. Tea Sci 01:49–54
Jing Fu, Heyuan J, Jianyong Z, Liting S, Weiwei W (2019) Research progress in the synthesis of catechin dimer oxidation products catalyzed by exogenous polyphenol oxidase. Food Sci 07:274–280
Davies AP, Goodsall C, Cai Y, Davis AL, Nurstend HE (1999) Black tea dimeric and oligomeric pigments—structures and formation. Springer US, Boston
Takashi T, Chie M, Kyoko I, Isao K (2002) Synthesis of theaflavin from epicatechin and epigallocatechin by plant homogenates and role of epicatechin quinone in the synthesis and degradation of theaflavin. J Agric Food Chem 50(7):2142–2148
Dai XL (2020) Discovery and characterization of tannase genes in plants: roles in hydrolysis of tannins. New Phytol 226(4):1104–1116
Coggon P, Moss GA, Graham HN, Sanderson GW (1973) The biochemistry of tea fermentation: oxidative degallation and epimerization of the tea flavanol gallates. J Agric Food Chem 21(4):727–733
Bajaj KL, Anan T, Tsushida T, Ikegaya K (2006) Effects of (−)-epicatechin on oxidation of theaflavins by polyphenol oxidase from tea leaves. J Agric Chem Soci Jpn 51(7):1767–1772
Acknowledgements
This work was financially supported by the Project of Enzymatic preparation of theaflavin from plant exogenous polyphenol oxidase of China (Grant no. 2021084), the Construction and demonstration of modern selenium rich black tea industry in Pingshan, China (Grant no. 2017NFP1068) and the Construction and application of modern Matcha production base in Pingshan, China (Grant no. 2018NZYZF0116).
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of interest
The authors have no conflicts of interest to report.
Ethical statement
I declare that I abide by the academic ethics, advocating rigorous style of study. This article is the authors’ study results. No competitive interests.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Li, D., Dong, L., Li, J. et al. Optimization of enzymatic synthesis of theaflavins from potato polyphenol oxidase. Bioprocess Biosyst Eng 45, 1047–1055 (2022). https://doi.org/10.1007/s00449-022-02723-x
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00449-022-02723-x