油you發fa一yi般ban有you個ge油you焐wu的de過guo程cheng，這zhe個ge過guo程cheng是shi在zai三san至zhi四si成cheng的de油you溫wen之zhi間jian進jin行xing的de。這zhe樣yang的de油you溫wen沒mei有you達da到dao膠jiao原yuan蛋dan白bai的de起qi始shi溫wen度du，膠jiao原yuan蛋dan白bai也ye就jiu沒mei有you可ke能neng變bian性xing。油you發fa初chu始shi階jie段duan要yao在zai三san至zhi四si成cheng油you溫wen中zhong進jin行xing的de原yuan因yin也ye就jiu在zai於yu此ci 。如(ru)果(guo)原(yuan)料(liao)在(zai)油(you)發(fa)初(chu)始(shi)階(jie)段(duan)的(de)油(you)焐(wu)過(guo)程(cheng)，將(jiang)原(yuan)料(liao)投(tou)入(ru)較(jiao)高(gao)的(de)油(you)溫(wen)中(zhong)進(jin)行(xing)油(you)焐(wu)，原(yuan)料(liao)中(zhong)的(de)膠(jiao)原(yuan)纖(xian)維(wei)結(jie)晶(jing)遇(yu)熱(re)就(jiu)會(hui)發(fa)生(sheng)熔(rong)化(hua)，從(cong)有(you)序(xu)晶(jing)開(kai)結(jie)構(gou)轉(zhuan)為(wei)無(wu)序(xu)非(fei)晶(jing)形(xing)結(jie)構(gou)，產(chan)生(sheng)肽(tai)鏈(lian)無(wu)規(gui)則(ze)不(bu)均(jun)勻(yun)收(shou)縮(suo)，而(er)局(ju)部(bu)發(fa)生(sheng)變(bian)性(xing)。現(xian)以(yi)下(xia)麵(mian)幾(ji)種(zhong)情(qing)況(kuang)為(wei)代(dai)表(biao)，說(shuo)明(ming)其(qi)如(ru)何(he)影(ying)響(xiang)正(zheng)式(shi)油(you)發(fa)時(shi)的(de) 效 果 。danbaizhijububianxing，yuanliaochuxianjiangkuai
，youfashibunenghenhaodizhankai。ruguoyuanliaozaiyouwujieduanyinzhoushougaowen
，qibufenwaibiaodedanbaizhijiuhuifashengbianxing
，jiangzaiyoufajieduanzuzhiredechuandao，beibaoguodebufenjiuhuichuxianjiangkuai
，zheyibufenbunenghenhaodizhangfa，qineibuzuzhizhongdedanbaizhijiubunengwanquanbianxing，zhangfadexiaoguoyejiubukenengjunyun。

蛋(dan)白(bai)質(zhi)的(de)局(ju)部(bu)變(bian)性(xing)
，使(shi)原(yuan)料(liao)表(biao)皮(pi)部(bu)分(fen)產(chan)生(sheng)氣(qi)孔(kong)，油(you)發(fa)過(guo)程(cheng)中(zhong)出(chu)現(xian)漏(lou)氣(qi)現(xian)象(xiang)。膠(jiao)原(yuan)纖(xian)維(wei)結(jie)晶(jing)發(fa)生(sheng)了(le)熔(rong)化(hua)
，阻(zu)氣(qi)能(neng)力(li)勢(shi)必(bi)變(bian)小(xiao)
，內(nei)部(bu)水(shui)分(fen)氣(qi)化(hua)後(hou)產(chan)生(sheng)很(hen)大(da)的(de)能(neng)量(liang)

，使(shi)表(biao)皮(pi)組(zu)織(zhi)出(chu)現(xian)氣(qi)體(ti)通(tong)過(guo)阻(zu)力(li)小(xiao)的(de)氣(qi)孔(kong)排(pai)出(chu)，使(shi)原(yuan)料(liao)很(hen)難(nan)脹(zhang)發(fa)。如(ru)果(guo)蛋(dan)白(bai)質(zhi)的(de)變(bian)性(xing)出(chu)現(xian)在(zai)原(yuan)料(liao)的(de)整(zheng)個(ge)表(biao)皮(pi)組(zu)織(zhi)，就(jiu)會(hui)阻(zu)止(zhi)氣(qi)體(ti)的(de)排(pai)出(chu)，同(tong)時(shi)導(dao)熱(re)性(xing)能(neng)降(jiang)低(di)，這(zhe)樣(yang)原(yuan)料(liao)中(zhong)多(duo)餘(yu)的(de)水(shui)分(fen)就(jiu)很(hen)難(nan)排(pai)出(chu)。油(you)發(fa)時(shi)原(yuan)料(liao)內(nei)部(bu)的(de)膠(jiao)原(yuan)蛋(dan)白(bai)就(jiu)不(bu)可(ke)能(neng)完(wan)全(quan)變(bian)性(xing)，仍(reng)有(you)熔(rong)膠(jiao)出(chu)現(xian)。蛋(dan)白(bai)質(zhi)的(de)局(ju)部(bu)變(bian)性(xing)
，還(hai)會(hui)使(shi)原(yuan)料(liao)內(nei)部(bu)出(chu)現(xian)氣(qi)泡(pao)，給(gei)初(chu)學(xue)者(zhe)產(chan)生(sheng)一(yi)種(zhong)油(you)焐(wu)過(guo)程(cheng)可(ke)以(yi)終(zhong)止(zhi)的(de)誤(wu)導(dao)。而(er)最(zui)終(zhong)油(you)發(fa)的(de)半(ban)成(cheng)品(pin)又(you)僵(jiang)又(you)硬(ying)，無(wu)法(fa)泡(pao)發(fa)
，失(shi)去(qu)食(shi)用(yong)價(jia)值(zhi)。因(yin)此(ci)，在(zai)油(you)發(fa)的(de)初(chu)始(shi)階(jie)段(duan)，應(ying)當(dang)將(jiang)需(xu)要(yao)油(you)發(fa)的(de)原(yuan)料(liao)與(yu)冷(leng)油(you)一(yi)起(qi)下(xia)鍋(guo)共(gong)熱(re)，當(dang)油(you)溫(wen)達(da)到(dao)三(san)至(zhi)四(si)成(cheng)時(shi)（約在 100℃左右），然後改用小火並保持這一油溫相當一段時間直到油焐效果達到而終止。

youfayuanliaojingyoufahouyuanliaozhongjiaoyuandanbaishifouwanquanbianxing，juedingleqiyuanliaozaiyihoudepaozhiguochengshangyuanliaodexingtaihezuizhongdechengcaixiaoguo。zhejiuyaoqiucaozuozhezhangwohaoyouwen，jinengshijiaoyuandanbaibianxing，younengshiyuanliaowanquanzhangfa。shichangshangyeyouyoufahaodeyudu、蹄ti盤pan之zhi類lei的de油you發fa半ban成cheng品pin出chu售shou，脹zhang發fa的de膨peng鬆song度du很hen大da
，色se澤ze潔jie白bai而er光guang滑hua，看kan上shang去qu似si乎hu脹zhang發fa效xiao果guo極ji為wei理li想xiang。但dan泡pao發fa或huo烹peng製zhi後hou，效xiao果guo就jiu不bu是shi那na麼me一yi回hui事shi了le。這zhe是shi因yin為wei這zhe些xie原yuan料liao（尤其是蹄筋）bushitongguoyouguofazhide，ershitongguojixieshebeishipinpenghuajifazhierchengde。tashizaifengbidehuanjingxiawanchengpengfadequanguochengde，shiliyonglejiaorongdexingzhiheqiyachadeyuanliao
，shiyuanliaopengzhangdingxingde。

zaizhepengzhangdequanguochengzhong，yuanliaozhongdeshuifenwufazhengfachuqu，erchanshenghendadeqiya
，shiyuanliaozhongdejiaoyuandanbaichanshengjiaorong，dangpenghuajineibuqiyadadaoyidingdeyalihou，jiuxunsudakaitouliaogai
，yuanliaoneibuyouyuyunzangzhexiangdangdadeqiyayuwaijieqiyaxingchenglehendadeqiyacha，yuanliaobianxunsupengfakailai。danshiyuanliaozaizhenggecaozuoguochengzhong，qihuanjingwenduquehennandadaojiaoyuandanbaiwanquanbianxingqieninggudewendu，yuanliaozhiyoutongguoyushouredepenghuajixiedetiezhiwaikejiechujianjieshoudaozanshidegaowen，jiejinhuomianqiangdadaojiaoyuandanbaidebianxingheninggudewendu，danqineibudejiaoyuandanbaihaishimeiyouwanquanbianxingninggu
，xiangfanneibuzuzhiqueshoudaoleyanzhongdepohuai。zhexieyuanliaojingguo“爆發”後hou，雖sui然ran膠jiao原yuan蛋dan白bai失shi去qu了le水shui解jie凝ning膠jiao的de特te征zheng，但dan又you出chu現xian了le組zu織zhi結jie構gou鬆song弛chi的de現xian象xiang，一yi經jing泡pao水shui
，就jiu會hui鬆song散san開kai來lai，成cheng菜cai以yi後hou口kou感gan無wu勁jin成cheng渣zha，也ye就jiu在zai情qing理li之zhi中zhong了le。中國糧油儀器網   http://www.98fo.cn/