在英美國家,麵包是主食,麵包專用粉產量占專用粉總量的50%以上。麵包是從歐美傳入我國的,由於其具有適於大規模工業化生產、食用方便、營養全麵的特點,現已逐漸被中國消費者所接受。
麵mian粉fen是shi生sheng產chan麵mian包bao的de最zui重zhong要yao原yuan料liao,隻zhi有you具ju有you高gao質zhi量liang且qie適shi於yu製zhi作zuo麵mian包bao的de麵mian粉fen,才cai能neng生sheng產chan出chu高gao質zhi量liang的de麵mian包bao。因yin此ci,選xuan擇ze麵mian包bao專zhuan用yong粉fen時shi注zhu意yi以yi下xia幾ji點dian:1.麵粉筋力。麵包之所以品種繁多,是由於麵筋形成網狀結構,構成麵包的 “骨架”,就像蓋房子澆注鋼筋混凝土一樣,澱粉好比水泥,麵筋好比是鋼筋,形成一個牢固的框架結構。
麵筋主要由小麥胚乳中麥膠蛋白和麥穀蛋白按1牶1比例組成。麥穀蛋白反映出麵團的韌性、彈性、強度和抗拉伸阻力;maijiaodanbaifanyingchumiantuandeyanshenxinghepengzhangxing。suoyiyaoqiumianbaozhuanyongfenbujinhanliangzhongdanbaizhishuliangduo,erqieerzhebilibixushidang。zheliangzhongdanbaizhixianghuzuoyongshimiantuanjiyouheshidedanxing、韌性,又有理想的延伸性。
2.mianfenbaidu。mianfenyanseyingxiangmianbaodewaiguan,kaojinmailizhongxinbuweipeirumozhimianfenyanseyubai,xingchengmianjinbujinzhilianggao,erqiepinzhihao。guowaishiyanzhengming,xiaomaipeiruzhongxinjuyouzuijiademianjin,suoyigenjumianfenyansekeyipanduanmianfenpinzhidehaohuai。
3.發fa酵jiao耐nai力li。影ying響xiang麵mian團tuan主zhu要yao發fa酵jiao的de主zhu要yao因yin素su是shi酵jiao母mu的de產chan氣qi能neng力li和he麵mian團tuan的de持chi氣qi能neng力li。當dang酵jiao母mu的de產chan氣qi力li與yu麵mian團tuan持chi氣qi力li同tong時shi達da到dao最zui大da時shi,則ze烘hong焙bei的de麵mian包bao體ti積ji最zui大da,內nei部bu組zu織zhi均jun勻yun。麵mian團tuan理li想xiang發fa酵jiao時shi間jian是shi一yi個ge範fan圍wei,這zhe個ge範fan圍wei稱cheng為wei發fa酵jiao耐nai力li。發fa酵jiao耐nai力li大da,酵jiao母mu產chan氣qi量liang和he麵mian團tuan保bao留liu氣qi體ti量liang都dou比bi較jiao大da,且qie能neng達da到dao產chan氣qi速su度du與yu麵mian筋jin膨peng脹zhang速su度du同tong步bu,才cai能neng達da到dao發fa酵jiao目mu的de。麵mian粉fen質zhi量liang決jue定ding麵mian團tuan的de持chi氣qi能neng力li,隻zhi有you麵mian粉fen筋jin力li適shi中zhong,延yan伸shen性xing好hao,酵jiao母mu活huo性xing高gao,發fa酵jiao力li大da,後hou勁jin大da,二er者zhe相xiang互hu平ping衡heng才cai能neng做zuo出chu高gao質zhi量liang麵mian包bao。因yin此ci,購gou買mai麵mian包bao專zhuan用yong粉fen時shi,應ying盡jin量liang選xuan用yong蛋dan白bai質zhi多duo,品pin質zhi好hao,筋jin力li適shi中zhong,具ju有you較jiao強qiang持chi氣qi能neng力li和he良liang好hao延yan伸shen性xing的de麵mian粉fen。 我wo國guo目mu前qian市shi售shou麵mian包bao專zhuan用yong粉fen多duo數shu達da不bu到dao國guo家jia規gui定ding標biao準zhun。廠chang家jia使shi用yong時shi,最zui好hao做zuo到dao麵mian粉fen進jin廠chang批pi批pi檢jian測ce,隨sui時shi調tiao整zheng生sheng產chan工gong藝yi參can數shu,保bao證zheng麵mian包bao質zhi量liang。
4.吸xi水shui率lv。它ta是shi指zhi調tiao製zhi單dan位wei重zhong量liang的de麵mian粉fen成cheng麵mian團tuan最zui大da加jia水shui量liang。麵mian粉fen吸xi水shui率lv高gao,可ke以yi提ti高gao麵mian包bao出chu品pin率lv,而er且qie麵mian包bao中zhong水shui分fen增zeng加jia,麵mian包bao心xin就jiu比bi較jiao柔rou軟ruan,保bao鮮xian時shi間jian相xiang應ying延yan長chang。 實(shi)驗(yan)表(biao)明(ming),如(ru)果(guo)麵(mian)粉(fen)含(han)水(shui)量(liang)低(di),則(ze)麵(mian)粉(fen)吸(xi)水(shui)率(lv)自(zi)然(ran)提(ti)高(gao)。如(ru)果(guo)麵(mian)粉(fen)較(jiao)細(xi),那(na)麼(me)破(po)損(sun)澱(dian)粉(fen)顆(ke)粒(li)會(hui)增(zeng)多(duo)。破(po)損(sun)澱(dian)粉(fen)使(shi)水(shui)更(geng)容(rong)易(yi)滲(shen)透(tou)進(jin)去(qu),吸(xi)水(shui)率(lv)自(zi)然(ran)高(gao)。美(mei)國(guo)規(gui)定(ding)麵(mian)包(bao)專(zhuan)用(yong)粉(fen)破(po)損(sun)澱(dian)粉(fen)含(han)量(liang)8%~9%。因此建議廠家購買麵包專用粉時,盡量選擇低水分,粒度細且存在一定量破損澱粉顆粒的麵粉。
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