优质稻谷氮气气调与常温储藏品质变化的比较研究

本文研究了优质稻谷在氮气气调储藏条件下的品质变化,并与常温储藏的品质变化做对比,以期为优质稻谷氮气气调储藏下的储备周期提供依据。将优质稻谷黄华占和两优于氮气气调和常温两种储藏方式下储藏,每两个月检测两种优质稻谷的脂肪酸值、品尝评分值、出糙率、整精米率、黄粒米率、直链淀粉含量、过氧化氢酶活动度、发芽率、糊化特性和质构特性的变化。实验结果表明：氮气气调储藏480 d(16个月)的优质稻谷的劣变程度与常温储藏420 d(14个月)的劣变程度相当。说明氮气气调储藏与常温储藏相比,能在一定程度上延缓优质稻谷的品质劣变,但效果有限。建议氮气气调储藏的优质稻谷的储备周期为16个月。

Comparative Study on Quality Change of High Quality Paddy in Nitrogen Modification Atmosphere Storage and Conventional Storage

The quality changes of high quality paddy under nitrogen modified atmosphere storage were studied, which was also compared with that in conventional temperature storage. The aim was to define the storage period of high quality paddy under nitrogen modified atmosphere storage. The high quality paddy, Huanghuazhan and Liangyou, were stored in simulated bins, respectively. The quality indicators, including, fatty acid value, tasting value, the proportion of yellow-colored kernel, amylose content, husked rice yield, head rice yield, catalase activity, germination rate, pasting properties and texture quality, were tested every two months. The results showed that the deterioration degree of high quality paddy stored under nitrogen modified atmosphere storage for 480 days (16 months) was basically equivalent to 420 days (14 months) stored in conventional storage. Consequently, comparing with conventional storage, nitrogen modified atmosphere storage can delay the quality deterioration of high quality paddy to a certain extent, but with limited effect. Therefore, it is recommended that the storage period of high quality paddy in nitrogen modified atmosphere was 16 months.