yibanguantoushipinchangduiguantouzuochangyashuizhujiareshajunchulishidoucaiyongbenxingshidewoshishajunguo,benshebeitongguoyinruyasuokongqikeshixianfanyashajun。rulengquexuzaiguoneijinxing,xuyongshuibengdaruguodingbudepenshuiguan(或采用水循環係統)。
在殺菌時,由於加熱使罐頭溫度升高,罐頭內壓力會超過罐外(在鍋內)的(de)壓(ya)力(li)。因(yin)此(ci),為(wei)了(le)避(bi)免(mian)殺(sha)菌(jun)時(shi)玻(bo)璃(li)瓶(ping)罐(guan)內(nei)增(zeng)壓(ya)而(er)跳(tiao)蓋(gai),對(dui)馬(ma)口(kou)鐵(tie)罐(guan)兩(liang)端(duan)麵(mian)凸(tu)出(chu),必(bi)須(xu)施(shi)加(jia)反(fan)壓(ya)力(li),特(te)別(bie)是(shi)對(dui)需(xu)要(yao)較(jiao)高(gao)殺(sha)菌(jun)溫(wen)度(du)的(de)肉(rou)類(lei)罐(guan)頭(tou)更(geng)就(jiu)如(ru)此(ci)。
使用反壓力殺菌,即是用壓縮空氣通入鍋內增加壓力,防止罐頭凸罐和跳蓋,其操作情況分述如下:youyuyasuokongqishibuliangdaoreti,kuangzhengqibenshenyoujuyouyidingdeyali。yinci,zaishajunshishengwenguochengzhong,bufangjinyasuokongqi,erzhizaidadaoshajunwenduhouchuyubaowenshi,caikaifangyasuokongqiruguonei,shiguoneizengjia0.5~0.8個ge大da氣qi壓ya。特te經jing過guo殺sha菌jun後hou,降jiang溫wen冷leng卻que時shi,停ting止zhi供gong應ying蒸zheng汽qi,將jiang冷leng卻que水shui壓ya入ru噴pen水shui管guan。由you於yu鍋guo內nei溫wen度du下xia降jiang,蒸zheng汽qi冷leng凝ning,而er使shi鍋guo內nei力li降jiang低di采cai用yong壓ya縮suo空kong氣qi的de壓ya力li來lai補bu償chang。
在殺菌過程中,應注意最初排氣,進而泄汽,使蒸汽流通。亦可每隔15-20分(fen)鍾(zhong)放(fang)氣(qi)一(yi)次(ci),促(cu)進(jin)熱(re)交(jiao)換(huan)。總(zong)之(zhi)必(bi)須(xu)滿(man)足(zu)殺(sha)菌(jun)條(tiao)件(jian)的(de)規(gui)定(ding),按(an)一(yi)定(ding)程(cheng)序(xu)進(jin)行(xing),殺(sha)菌(jun)溫(wen)度(du)的(de)高(gao)低(di),殺(sha)菌(jun)壓(ya)力(li)的(de)大(da)小(xiao),殺(sha)菌(jun)時(shi)間(jian)的(de)長(chang)短(duan)和(he)操(cao)作(zuo)方(fang)法(fa)等(deng)均(jun)由(you)罐(guan)頭(tou)產(chan)品(pin)殺(sha)菌(jun)工(gong)藝(yi)作(zuo)出(chu)具(ju)體(ti)規(gui)定(ding)。
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