Effect of γ-irradiation on volatile compounds of dried Welsh onion (Allium fistulosum L.)

被引:40
|
作者
Gyawali, R
Seo, HY
Lee, HJ
Song, HP
Kim, DH
Byun, MW
Kim, KS [1 ]
机构
[1] Chosun Univ, Dept Food & Nutr, Kwangju 501759, South Korea
[2] Mokpo Sci Coll, Dept Hotel Cuisine & Bakery, Mokpo 570730, South Korea
[3] Korea Atom Energy Res Inst, Radiat Food Sci & Biotechnol Team, Taejon 305353, South Korea
关键词
Welsh onion; gamma-irradiation; volatile compounds;
D O I
10.1016/j.radphyschem.2005.07.001
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The volatile compounds of gamma-irradiated dried Welsh onion were isolated by simultaneous distillation-extraction (SDE) technique and then analyzed by gas chromatography-mass spectrometry (GC-MS) along with their non-irradiated counterparts. A total of 35 volatile compounds were identified in non-irradiated and 1 kGy irradiated samples and 36 volatile compounds were identified in 3, 5, 10 and 20 kGy irradiated samples so far belong to chemical classes of acid, alcohol, aldehyde, ester, furan, ketone and S-containing compound. S-containing compounds were detected as major volatile compounds of all experimental samples. Though the content of several compounds was increased after irradiation, content of major S-containing compounds was found to decreased in the process. Application of high-dose irradiation if required for microbial decontamination of dried Welsh onion is feasible as it enhanced the total concentration of volatile compounds by 31.60% and 24.85% at 10 and 20 kGy, respectively. (C) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:322 / 328
页数:7
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