The effect of superfine tea powder addition on the acrylamide content of innovative Xinjiang nang products (tea nang)

Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
Ying HuangXujie Hou

Abstract

In the present study, tea variety and proportions and tea nang production conditions were optimised to improve tea nang flavour, and dynamic changes in polyphenols and acrylamide content were determined. Orthogonal experimental design was adopted to optimise processing of low-acrylamide tea nang through a multi-index integrated evaluation method (MIEM) and a single-index balanced evaluation method (SBEM). Tea nang acrylamide content, polyphenol content and flavour quality were analysed by HPLC, colorimetry and sensory evaluation, respectively. A 180°C baking temperature, 7% matcha tea powder (MTP) content and 11 min of baking time were optimum. From the 11 kinds of tea from four categories, tea nang with 7% Biluochun tea powder exhibited the best comprehensive quality: decreased acrylamide, increased polyphenols, and the highest sensory scores (11.55 μg/kg, 6.1 mg/g and 92, respectively). This tea nang exhibited flavour senses of harmony, a strong tea flavour, and slight sweetness in back.

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Citations

Mar 27, 2021·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Srushti TambePurnima Amin

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