借助直鏈澱粉分析儀對大米品質的相關實驗
近年來,有研究人員借助直鏈澱粉分析儀實驗發現,直鏈澱粉與我們食用大米的粘性、rouruanxingheguangzetexingxixixiangguan,zhexieshizhijiejuedingdamipinzhihekougandeguanjianyaosu,yenengyingxiangdamidexiaoliang。yinci,cedingdamidezhongzhiliandianfenhanliangchenglexiangguanqiyedanweidegongzuozhongxinzhiyi。
對此,托普雲農的小編也利用直鏈澱粉分析儀duidamijinxingleshiyan,jieguoyuyuqianrenyanjiuchengguojibenshangxiangtong,butongshuidaodianfenjiegouchayibumingxian,genjuzhiliandianfenhanliangdebutongduitamenjinxingqufen,qizhongnuoxingdamizhiliandianfenhanliangzai2%以下,低含量為8~20%,中等含量為21~25%,高含量一般是指直鏈澱粉含量多於25%的大米,而已知直鏈澱粉含量的最大值約為總澱粉量的35%,其餘則均為支鏈澱粉。生活中,我們將大米分為粳米、秈米和糯米,相信大家也深有體會,糯米再進行蒸煮後會非常柔軟,因為糯米的直鏈澱粉含量最小(約2%以下),粘性為最大。

直zhi鏈lian澱dian粉fen分fen析xi儀yi對dui大da米mi有you一yi定ding的de評ping價jia作zuo用yong,另ling外wai支zhi鏈lian澱dian粉fen對dui大da米mi澱dian粉fen晶jing體ti結jie構gou和he糊hu化hua特te性xing也ye有you很hen大da影ying響xiang,大da米mi中zhong直zhi鏈lian澱dian粉fen又you可ke分fen為wei可ke溶rong性xing直zhi鏈lian澱dian粉fen和he不bu溶rong性xing直zhi鏈lian澱dian粉fen,後hou者zhe主zhu要yao是shi直zhi鏈lian澱dian粉fen與yu脂zhi類lei及ji其qi他ta物wu質zhi的de複fu合he物wu,兩liang者zhe的de比bi例li不bu同tong會hui影ying響xiang稻dao米mi的de品pin質zhi,支zhi鏈lian澱dian粉fen的de短duan/長鏈比與澱粉結晶度有很強的相關性,短/長(chang)鏈(lian)比(bi)越(yue)高(gao),結(jie)晶(jing)度(du)越(yue)高(gao)。我(wo)們(men)也(ye)可(ke)根(gen)據(ju)支(zhi)鏈(lian)澱(dian)粉(fen)的(de)結(jie)構(gou)特(te)點(dian)和(he)大(da)米(mi)澱(dian)粉(fen)的(de)結(jie)晶(jing)性(xing)能(neng)和(he)粘(zhan)貼(tie)指(zhi)數(shu),在(zai)分(fen)子(zi)水(shui)平(ping)上(shang)控(kong)製(zhi)大(da)米(mi)澱(dian)粉(fen)生(sheng)物(wu)合(he)成(cheng),從(cong)而(er)得(de)到(dao)理(li)想(xiang)的(de)特(te)定(ding)基(ji)因(yin)型(xing)澱(dian)粉(fen),從(cong)而(er)達(da)到(dao)影(ying)響(xiang)稻(dao)米(mi)品(pin)質(zhi)改(gai)善(shan)。



