电子束辐照抑制高水分大米储藏过程中的品质劣化

IF 3.7 2区农林科学 Q2 FOOD SCIENCE & TECHNOLOGY

Journal of Cereal Science Pub Date : 2025-09-01 DOI:10.1016/j.jcs.2025.104264

Dongmin Li , Jiali Xing , Pei Wang , Li Wang , Yuwei Zhang , Rong He , Dan Ouyang , Ying Wan , Xiaohu Luo

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引用次数: 0

摘要

本研究系统研究了电子束辐照（EBI, 1 ~ 4 kGy）对高水分水稻（HMR， 17%水分）和低水分水稻（LMR， 13%水分）270 d贮藏品质的影响。结果表明，EBI显著延缓了HMR的品质裂变，有效抑制了脂肪酸值的增加（HMR-4 kGy脂肪酸值维持在16.57 mg KOH/100g），抑制了脂肪酶活性（HMR-4 kGy储存后脂肪酶活性仅为4.93 U/mL）。x射线衍射和差示扫描量热分析显示，淀粉结晶度（HMR和LMR分别降低11.61和6.78个百分点）和糊化温度（分别降低5.98°C和5.48°C）呈剂量依赖性降低。低场核磁共振显示，辐照样品的吸水率提高，这是由于淀粉颗粒表面微裂纹的增加。经ebi处理的HMR储存后，保留了较高的结合水含量和优越的织构性能。多元线性预测模型具有较高的拟合度（R2分别为0.881和0.887），验证了其预测贮藏过程中脂肪酸值和水分含量变化的可靠性。综上所示，EBI是一种很有前途的绿色粮食贮藏技术，主要通过保持其水分含量和抑制脂肪酸水平的升高来维持其贮藏稳定性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Electron beam irradiation inhibits high-moisture rice quality deterioration during storage

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Electron beam irradiation inhibits high-moisture rice quality deterioration during storage

This research conducted a systematic investigation into the impacts of electron beam irradiation (EBI, 1–4 kGy) on the storage quality of high-moisture rice (HMR, 17 % moisture) and low-moisture rice (LMR, 13 % moisture) over a 270-day period. Results showed that EBI significantly delayed the quality fission in HMR, effectively inhibited the increase in fatty acid values (e.g., HMR-4 kGy maintained a fatty acid value of 16.57 mg KOH/100g) and suppressed lipase activity (HMR-4 kGy showed only 4.93 U/mL lipase activity after storage). X-ray diffraction and differential scanning calorimetry analyses revealed dose-dependent reductions in starch crystallinity (11.61 and 6.78 percentage point decreases for HMR and LMR, respectively) and gelatinization temperature (5.98 °C and 5.48 °C decreases). Low-field nuclear magnetic resonance indicated improved water absorption in irradiated samples, attributed to increased starch granule surface micro-cracks. After storage, EBI-treated HMR retained higher bound water content and superior textural properties. The multivariate linear prediction model exhibited high goodness-of-fit (R² is 0.881 and 0.887, respectively), verifying its reliability for predicting fatty acid value and moisture content changes during storage Overall, EBI represents a promising green grain storage technology for maintaining the storage stability of HMR, primarily by preserving its moisture content and inhibiting the elevation of fatty acid levels.

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来源期刊

Journal of Cereal Science 工程技术-食品科技

CiteScore

7.80

自引率

2.60%

发文量

163

审稿时长

38 days

期刊介绍： The Journal of Cereal Science was established in 1983 to provide an International forum for the publication of original research papers of high standing covering all aspects of cereal science related to the functional and nutritional quality of cereal grains (true cereals - members of the Poaceae family and starchy pseudocereals - members of the Amaranthaceae, Chenopodiaceae and Polygonaceae families) and their products, in relation to the cereals used. The journal also publishes concise and critical review articles appraising the status and future directions of specific areas of cereal science and short communications that present news of important advances in research. The journal aims at topicality and at providing comprehensive coverage of progress in the field.