Effects of different thawing methods on flavor compounds and sensory characteristics of raspberry

吹覆盆子 风味 化学 气味 芳香 乙醛 制冷 萜烯 食品科学 色谱法 乙醇 有机化学 机械工程 工程类
作者
Lu Liu,Chunmao Lv,Xianjun Meng,Guang Xin,Бин Ли
出处
期刊:Flavour and Fragrance Journal [Wiley]
卷期号:35 (5): 478-491 被引量:19
标识
DOI:10.1002/ffj.3580
摘要

Abstract In order to identify more suitable thawing method to preserve aroma, taste, and other sensory quality of raspberry, five thawing methods were used to treat frozen raspberry, namely water bath thawing, microwave thawing, ultrasonic thawing, room temperature thawing, and refrigeration thawing. Gas chromatography‐mass spectrometry was employed to study the quantitative and qualitative analysis of the volatile compounds, and the characteristic flavor components of raspberry were compared by relative odor activity value (ROAV). Electronic tongue technique and fuzzy comprehensive evaluation were used to ensure the changes in sensory qualities of raspberry. The results showed that the time of microwave thawing was 0.57 minutes, and drip loss was 4.40%. Both of them were the lowest among the five thawing methods. The volatile components of raspberry included aldehydes, esters, ketones, alcohols, fatty acids, terpenes, and other compounds. Among them, there were 19 kinds of volatile components in quick‐frozen raspberries, 18 volatile components in raspberries after treated by microwave thawing and refrigeration thawing, 16 volatile components after room temperature thawing, 12 volatile components after ultrasonic thawing, and 10 volatile components after water bath thawing. The characteristic flavor compounds of raspberry were identified as acetaldehyde, alpha‐ionone, beta‐ionone, raspberry ketone, alpha‐terpene, and alpha‐pinene. Microwave thawing was the most suitable way to preserve the characteristic flavor components of raspberry, but water bath thawing could destroy the most of compounds. After microwave thawing, raspberry tasted best and was most acceptable to consumers. Therefore, microwave thawing was the most appropriate method to preserve raspberry flavor and sensory quality among the five thawing methods.
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