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儲藏溫度與初始含水率對稻谷和糙米食用品質(zhì)的影響
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江蘇省政策引導(dǎo)類計劃(蘇北科技專項)項目(SZ-YC2019002)和政策引導(dǎo)類計劃(國際科技合作/港澳臺科技合作)——“一帶一路”創(chuàng)新合作項目(BZ2020061)


Effect of Storage Temperature and Initial Moisture Content on Eating Quality of Rice and Brown Rice
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    摘要:

    以產(chǎn)于江蘇省東臺市的南粳9108為研究對象,測定了3種含水率(12.10%、14.16%和16.34%)的稻谷和糙米,在低溫(8℃)、準低溫(15℃)及室溫(20~25℃)3種儲藏條件下的含水率、脂肪酸含量、食味值和直鏈淀粉含量4個食用品質(zhì)指標的變化,分析比較了在245d的儲藏期內(nèi),稻谷和糙米食用品質(zhì)指標的變化規(guī)律。結(jié)果表明,在儲藏前,偏高含水率樣品的食用品質(zhì)優(yōu)于正常和偏低的樣品。但隨著儲藏時間的延長,稻谷和糙米的含水率和食味值均逐步降低,而脂肪酸含量和直鏈淀粉含量則出現(xiàn)不同程度的上升,初始含水率、儲藏溫度和時間對脂肪酸含量、食味值和直鏈淀粉含量均有極顯著的影響(P<0.01)。在不同的儲藏溫度下,不同含水率稻谷和糙米的食用品質(zhì)都隨著儲藏時間的延長而逐步降低。其中,較高含水率的樣品在較高儲藏溫度下品質(zhì)下降的程度更高,而且糙米食用品質(zhì)下降的程度高于稻谷。另外,試驗結(jié)果還顯示,在低含水率條件下(12.1%),在不同儲藏溫度下稻谷和糙米食用品質(zhì)變化都很小,表明在較低含水率下將水稻以稻谷的形式進行儲藏,有利于保持食用品質(zhì)。

    Abstract:

    The changes of four edible quality indicators, including moisture content, fatty acid content, eating value and straight-chain amylose content, were measured under three storage conditions: low temperature (8℃), quasi-low temperature (15℃) and room temperature (20~25℃), using South Japonica 9108 produced in Dongtai, Jiangsu Province as the object of study. The results showed that before storage, the rice and brown rice were more stable than the others, and the high moisture content samples had better eating quality than the normal and low moisture content samples. The initial moisture content, storage temperature and time had a significant effect on the fatty acid content, flavour value and straight chain amylose content (P<0.01). At different storage temperatures, the eating quality of both rice and brown rice at different moisture contents was gradually decreased with increasing storage time. The higher moisture content samples showed a higher reduction in quality at higher storage temperatures, and the brown rice showed a higher reduction in eating quality than the rice. The results also showed that at low moisture content (12.1%), there was little change in the eating quality of both rice and brown rice at different storage temperatures, suggesting that storing rice in the form of paddy at a lower moisture content is clearly beneficial to the maintenance of eating quality.

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陳坤杰,梁靜,蔣維銀,張季偉,於海明.儲藏溫度與初始含水率對稻谷和糙米食用品質(zhì)的影響[J].農(nóng)業(yè)機械學(xué)報,2022,53(9):390-398. CHEN Kunjie, LIANG Jing, JIANG Weiyin, ZHANG Jiwei, YU Haiming. Effect of Storage Temperature and Initial Moisture Content on Eating Quality of Rice and Brown Rice[J]. Transactions of the Chinese Society for Agricultural Machinery,2022,53(9):390-398.

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  • 收稿日期:2021-10-28
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  • 在線發(fā)布日期: 2022-09-10
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