Abstract
Aroma composition is critical to the quality of rice wine. In order to clarify the effect of different koji on the aroma components of rice wine. The Yuanyang rice was selected as raw material, and three kinds of rice wine koji were added during rice wine fermentation. The aroma components of three wine samples fermented at 31 °C for nine days were qualitatively and quantitatively analyzed by headspace solid-phase microextraction and gas chromatography-mass spectrometry (HS-SPME-GC-MS). The results showed that a total of 81 aroma components were detected in the three groups of wine samples, including 30 esters, 18 alcohols, 4 acids and 29 other organic substances. The ester with the most content was ethyl palmitic acid, and the alcohol with the most content was ethanol. Therefore, the amount and type of esters, the ratio and interaction among esters, alcohols and acids in wine play an important role in the sensory quality of rice wine, and the joint action of various aroma components affects the quality of rice wine.
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