시판 미역 및 쌀엿의 이취성분(異臭成分) 규명

Identification of Off-Flavor in Sea Mustard and Rice Syrup Sold in the Markets

시판되고 있는 가공식품 중 이취(異臭) 미역 및 이취(異臭) 쌀엿의 냄새성분을 규명하고, 이의 발생원인을 밝히고자 하였다. 이취 미역에서는 naphthalene,2-methylnaphthalene, 1-methylnaphthalene, 2,6-dimethylnaphthalene, 1,5-dimethylnaphthalene, 1,8-dimethylnaphthalene, 2,7-dimethylnaphthalene, 1,4,6-trimethylnaphthalene, 2,3,6-trimethylnaphthalene 등 나프탈렌계화합물들이 검출되었으며, 이취 쌀엿에서는 butanoic acid, hexanoic acid, heptanoic acid, octanoic acid, nonanoic acid, decanoic acid, dodecanoic acid,tetradecanoic acid 등 유리지방산 및 2-furanmethanol, 2-furancarboxaldehyde 이 검출되었다. 미역의 이취 생성원인은 채취선박의 페인트 오염으로부터, 쌀엿은 변패된 쌀을 당화의 원료로 사용한데 기인한 것으로 본다.

The purpose of this study was to identify off-flavor compounds in sea mustard and rice syrup sold in the markets. Naphthalenes such as naphthalene, 2-methylnaphthalene, 1-methylnaphthalene, 2,6-dimethylnaphthalene, 1,5-dimethylnaphthalene, 1,8-dimethylnaphthalene, 2,7-dimethylnaphthalene, 1,4,6-trimethylnaphthalene, 2,3,6-trimethylnaphthalene etc., were present in sea mustard, while free fatty acids such as butanoic acid, hexanoic acid, heptanoic acid, octanoic acid, nonanoic acid, decanoic acid, dodecanoic acid, tetradecanoic acid and 2-furanmethanol, 2-furancarboxaldehyde etc. in rice syrup. The former (naphthalenes) have been supposed to be contaminents from paint of ship and the latter (free fatty acids) derived from deteriorated rice for saccharification. From the results of the samples studied, formation of their off-flavor compounds seems to be related with the condition of storage, the process of production and circulation in the markets.