麵筋含量和麵筋吸水率怎麼計算?
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麵筋指數儀是用來測定麵粉中麵筋含量和麵筋指數的專用儀器,並通過麵筋指數分析麵筋的筋力強弱。主要由麵筋洗滌儀、麵筋指數測定儀、麵筋烘幹儀三大部分組成。該儀器是用於對小麥粉和全麥粉的測定,可廣泛用於食品和麵筋加工、糧油科研機構等部門。
麵筋指數儀的工作原理是將小麥粉或者全麥粉加一定量的鹽水在帶有篩網的洗滌杯中混合20秒(miao)形(xing)成(cheng)麵(mian)團(tuan),然(ran)後(hou)用(yong)鹽(yan)水(shui)洗(xi)滌(di),去(qu)除(chu)麵(mian)團(tuan)中(zhong)澱(dian)粉(fen)等(deng)可(ke)溶(rong)於(yu)水(shui)的(de)物(wu)質(zhi)就(jiu)可(ke)得(de)到(dao)麵(mian)筋(jin),在(zai)離(li)心(xin)力(li)的(de)作(zuo)用(yong)下(xia),麵(mian)筋(jin)離(li)心(xin)出(chu)外(wai)表(biao)粘(zhan)附(fu)的(de)水(shui)分(fen)使(shi)得(de)部(bu)分(fen)濕(shi)麵(mian)筋(jin)穿(chuan)過(guo)篩(shai)盒(he)孔(kong)板(ban),稱(cheng)量(liang)計(ji)算(suan)後(hou)則(ze)可(ke)得(de)到(dao)小(xiao)麥(mai)粉(fen)、全麥粉中濕麵筋的含量及麵筋指數,然後用儀器配套的烘幹儀烘幹濕麵筋的水分後,稱量計算可得到幹麵筋的含量和麵筋吸水率。



