食品科学 ›› 2009, Vol. 30 ›› Issue (6): 246-249.doi: 10.7506/spkx1002-6630-200906058

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常温下不同低氧贮藏对松籽脂肪酸氧化的影响

李鹏霞1,王 炜1,黄开红1,梁丽松2,王贵禧2 ,*   

  1. 1.江苏省农业科学院农产品加工研究所 2.中国林业科学研究院林业研究所,国家林业局森林培育实验室
  • 收稿日期:2008-03-10 修回日期:2008-05-12 出版日期:2009-03-15 发布日期:2010-12-29
  • 通讯作者: 王贵禧 E-mail:wanggx@caf.ac.cn
  • 基金资助:

    “十一五”国家科技支撑计划项目(2006BAD01A17)

Effect of Low-oxygen Storage on Fatty Acid Oxidation of Korea Pine Nut Kernel at Ambient Temperature

LI Peng-xia1,WANG Wei1,HUANG Kai-hong1,LIANG Li-song2,WANG Gui-xi2,*   

  1. (1. Institute of Agri-production Process, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China;
    2. Key Laboratory of Forestry Silviculture of State Forestry Administration, Institute of Forestry, Chinese Academy of Forestry,
    Beijing 100091, China)
  • Received:2008-03-10 Revised:2008-05-12 Online:2009-03-15 Published:2010-12-29
  • Contact: WANG Gui-xi2,* E-mail:wanggx@caf.ac.cn

摘要:

本研究以朝鲜红松为试材,将松籽置于O2 含量分别为2% ± 1%、5% ± 1%、10% ± 1% 的密闭容器中,并以空气贮藏的松籽为对照(CK),研究了常温下(20~30℃)贮藏180d 期间松籽的脂肪酸氧化变化。实验结果表明:松籽的总脂肪含量和碘价在贮藏过程中下降,而酸价、过氧化值和皂化值升高;不同浓度低氧贮藏对于防止总脂肪的降解有显著的效果,贮藏180d 时低氧贮藏松籽的酸价、过氧化值显著低于CK,而碘价则显著高于CK,2%低氧贮藏对于防止皂化值的升高也有明显作用。低氧能较好的抑制松籽脂肪酸氧化,有利于保持松籽的贮藏品质,其中2% 低氧贮藏的效果最好。

关键词: 松籽, 低氧, 常温, 贮藏, 脂肪酸氧化

Abstract:

In this study, the changes of fatty acid oxidation in nut kernel of Korea pine (Pinus koraiensis Sieb. et Zucc.) which were stored in air or air-tight container containing 2%±1%, 5%±1% or 10%±1% O2 for 180 days at ambient temperature (20 to 30 ℃) were investigated. The results showed that total fat, iodine value of Korea pine nut kernel decrease but the acid value, peroxide value, saponification value increase during storage. Low O2 concentration is effective to slow down the decrease of fat content. After 180 days of storage, the Korea pine nut kernel stored in low O2 environment has lower acid value and peroxide value but higher iodine value compared with that stored in air. Furthermore, 2% O2 can inhibit the rise of saponification value of Korea pine nut kernel effectively. All these indicated that low O2 storage can inhibit fat acid oxidation of Korea pine nut kernel, and is beneficial to its storage quality. 2% O2 storage has the best effect.

Key words: pine nut, low O2, ambient-temperature, storage, fatty acid oxidation

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