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Studies on quality of orthodox teas made from anthocyanin-rich tea clones growing in Kangra valley, India.
Food Chem. 2015 Jun 01; 176:357-66.FC

Abstract

Recently anthocyanin-rich purple tea varieties have been developed. The quality of these new purple tea varieties developed in Kangra valley was assessed, and compared with the quality of tea from standard Kangra clone. Purple tea shoots (PL) recorded higher amount of polyphenols compared to standard green tea shoot (GL) while epigallocatechin gallate (EGCG) recorded higher levels in GL. Higher levels of theaflavins were recorded in orthodox black tea from purple shoots (BTP) compared to black tea (BT) made from green shoots. Both theanine and caffeine recorded higher levels in GL. Volatile flavour profiles of these teas showed qualitative and quantitative differences. Aroma extract dilution assay showed higher dilution factors in BTP than BT. Orthodox teas from purple shoots exhibited higher antioxidant activity compared to standard black tea. Strong correlation of total quality scores with aroma and infusion colour was observed. Tea from anthocyanin-rich cultivars can become specialty teas with high antioxidant activity.

Authors+Show Affiliations

Academy of Scientific and Innovative Research, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, India.Academy of Scientific and Innovative Research, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, India.Academy of Scientific and Innovative Research, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, India. Electronic address: ashugulati@ihbt.res.in.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

25624244

Citation

Joshi, Robin, et al. "Studies On Quality of Orthodox Teas Made From Anthocyanin-rich Tea Clones Growing in Kangra Valley, India." Food Chemistry, vol. 176, 2015, pp. 357-66.
Joshi R, Rana A, Gulati A. Studies on quality of orthodox teas made from anthocyanin-rich tea clones growing in Kangra valley, India. Food Chem. 2015;176:357-66.
Joshi, R., Rana, A., & Gulati, A. (2015). Studies on quality of orthodox teas made from anthocyanin-rich tea clones growing in Kangra valley, India. Food Chemistry, 176, 357-66. https://doi.org/10.1016/j.foodchem.2014.12.067
Joshi R, Rana A, Gulati A. Studies On Quality of Orthodox Teas Made From Anthocyanin-rich Tea Clones Growing in Kangra Valley, India. Food Chem. 2015 Jun 1;176:357-66. PubMed PMID: 25624244.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Studies on quality of orthodox teas made from anthocyanin-rich tea clones growing in Kangra valley, India. AU - Joshi,Robin, AU - Rana,Ajay, AU - Gulati,Ashu, Y1 - 2014/12/23/ PY - 2014/03/27/received PY - 2014/12/05/revised PY - 2014/12/16/accepted PY - 2015/1/28/entrez PY - 2015/1/28/pubmed PY - 2015/9/19/medline KW - Antioxidant potential KW - Purple leaves KW - Sensory analysis KW - Tea quality SP - 357 EP - 66 JF - Food chemistry JO - Food Chem VL - 176 N2 - Recently anthocyanin-rich purple tea varieties have been developed. The quality of these new purple tea varieties developed in Kangra valley was assessed, and compared with the quality of tea from standard Kangra clone. Purple tea shoots (PL) recorded higher amount of polyphenols compared to standard green tea shoot (GL) while epigallocatechin gallate (EGCG) recorded higher levels in GL. Higher levels of theaflavins were recorded in orthodox black tea from purple shoots (BTP) compared to black tea (BT) made from green shoots. Both theanine and caffeine recorded higher levels in GL. Volatile flavour profiles of these teas showed qualitative and quantitative differences. Aroma extract dilution assay showed higher dilution factors in BTP than BT. Orthodox teas from purple shoots exhibited higher antioxidant activity compared to standard black tea. Strong correlation of total quality scores with aroma and infusion colour was observed. Tea from anthocyanin-rich cultivars can become specialty teas with high antioxidant activity. SN - 1873-7072 UR - https://www.unboundmedicine.com/medline/citation/25624244/Studies_on_quality_of_orthodox_teas_made_from_anthocyanin_rich_tea_clones_growing_in_Kangra_valley_India_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0308-8146(14)01980-3 DB - PRIME DP - Unbound Medicine ER -