摘要
煎炸食品一直受到消费者的喜爱,煎炸食品的质量与煎炸油的品质息息相关。传统评价煎炸油品质的理化方法检验费时、操作繁琐、易接触有毒试剂,不能实现在线检测。低场核磁共振技术（LF-NMR）是一种快速、准确、无损的检测方法。以大豆油和添加抗氧化剂大豆油为原料、薯条为煎炸食品,对大豆煎炸油进行理化指标及低场核磁检测。通过研究LF-NMR检测参数S21及t2w与煎炸时间、酸价、羰基价、极性组分含量的相关性,发现S21与2种大豆煎炸油的上述指标均呈正相关、t2w与之均呈负相关,且相关性良好,相关系数在0.905 8~0.994之间。说明利用低场核磁共振技术检测的S21和t2w可以有效地反映大豆煎炸油品质的变化,且不受抗氧化剂的影响。
52 samples of Swida wilsoniana＇s fruits were analyzed by near- infrared spectroscopy DA7200 in the paper. A model of non - destructive determination on fruits content was established finally. Based on the chemical analysis inspection data and partial least squares （PLS） analysis, the model was determined and the verification accuracy was carried out. The results showed that there was no significant difference between near- infrared spectroscopy and standard analytical methods. The non - destructive determination by near - infrared spectroscopy could be utilized for research of fruits content from Swida wilsoniana in crude fat, water and crude protein and heating value to provide experimental data for the development of breeding. ~
出处
《中国粮油学报》
EI
CAS
CSCD
北大核心
2014年第9期115-119,123,共6页
Journal of the Chinese Cereals and Oils Association
基金
国家粮食局公益项目(201413013)
