目前,國際上80%的零售無菌軟性包裝食品是乳或含乳製品,美國幾乎90%無菌小包裝(零售容量)是果汁飲料產品。大量(220L)無菌包裝在美國應用十分廣泛,主要應用於番茄漿和果漿製品。
wujunchulihebaozhuangshijiangyuxianmiejundechanpinzaiwujundehuanjingzhongchongtianbingmifengzaiwujunrongqizhongdejiagongjishu,wujunbaozhuangkeyizaishiwenxiachangqizhucun。wujunbaozhuangyongdaosangejibenshuyu:無菌係統、無(wu)菌(jun)處(chu)理(li)係(xi)統(tong)和(he)無(wu)菌(jun)包(bao)裝(zhuang)係(xi)統(tong)。無(wu)菌(jun)係(xi)統(tong)是(shi)指(zhi)為(wei)了(le)生(sheng)產(chan)密(mi)封(feng)包(bao)裝(zhuang)的(de)商(shang)業(ye)無(wu)菌(jun)係(xi)統(tong)是(shi)指(zhi)為(wei)了(le)生(sheng)產(chan)密(mi)封(feng)包(bao)裝(zhuang)的(de)商(shang)業(ye)係(xi)統(tong)和(he)包(bao)裝(zhuang)係(xi)統(tong)。無(wu)菌(jun)處(chu)理(li)係(xi)統(tong)是(shi)對(dui)產(chan)品(pin)進(jin)行(xing)殺(sha)菌(jun)並(bing)將(jiang)無(wu)菌(jun)產(chan)品(pin)傳(chuan)送(song)到(dao)包(bao)裝(zhuang)設(she)備(bei)的(de)係(xi)統(tong)。無(wu)菌(jun)包(bao)裝(zhuang)係(xi)統(tong)包(bao)括(kuo)在(zai)無(wu)菌(jun)條(tiao)件(jian)下(xia)將(jiang)無(wu)菌(jun)產(chan)品(pin)充(chong)填(tian)在(zai)無(wu)菌(jun)容(rong)器(qi)中(zhong)並(bing)加(jia)以(yi)密(mi)封(feng)的(de)所(suo)有(you)設(she)備(bei)。
無菌處理關鍵技術。無菌處理係統,即產品殺菌係統的主要組成有輸送泵、加熱器、保持管、冷卻器、背bei壓ya閥fa和he無wu菌jun貯zhu罐guan。由you於yu無wu菌jun包bao裝zhuang產chan品pin是shi由you泵beng連lian續xu輸shu送song的de,因yin此ci無wu菌jun包bao裝zhuang產chan品pin的de殺sha菌jun是shi連lian續xu進jin行xing的de,因yin此ci也ye稱cheng為wei連lian續xu殺sha菌jun。無wu菌jun包bao裝zhuang產chan品pin連lian續xu殺sha菌jun所suo要yao求qiu的de無wu菌jun性xing與yu常chang規gui的de罐guan頭tou食shi品pin相xiang同tong。但dan無wu菌jun包bao裝zhuang產chan品pin在zai裝zhuang入ru容rong器qi之zhi前qian通tong常chang采cai用yong高gao溫wen短duan時shi(HLST),甚至超高溫瞬時(UHTST)shajun。gaowenduanshihechaogaowenshunshishajunchuleyuchangguideguantoushipinshajunxiangtongzhiwai,haiyoutadeteshuxing。muqianguojishangduigaowenduanshiranshajunhaimeiyoumingquededingyi,danyibandourenweiduiyupH大於4.6的低酸性食品,溫度138~145℃、時間為1~30s的殺菌方式,是高溫短時殺菌,這也是大多數無菌包裝低酸食品殺菌常用的工藝規程。殺菌溫度在150~166℃,時間在0.1~0.01s,稱之為超高溫瞬時殺菌,少數蒸氣直接噴射加熱的產品殺菌係統有所采用。對於pH≤4.6的酸性食品,溫度93℃~96℃,時間為15~30s,稱之為高溫巴氏殺菌,這是大多數無菌包裝酸性食品會菌係統采用的殺菌規程。
無(wu)菌(jun)包(bao)裝(zhuang)的(de)關(guan)鍵(jian)技(ji)術(shu)在(zai)於(yu)包(bao)裝(zhuang)材(cai)料(liao)或(huo)包(bao)裝(zhuang)容(rong)器(qi)的(de)殺(sha)菌(jun),無(wu)菌(jun)性(xing)的(de)獲(huo)得(de)和(he)保(bao)持(chi)。為(wei)了(le)達(da)到(dao)上(shang)述(shu)兩(liang)個(ge)目(mu)的(de),對(dui)無(wu)菌(jun)包(bao)裝(zhuang)係(xi)統(tong)關(guan)鍵(jian)控(kong)製(zhi)點(dian)的(de)監(jian)控(kong)和(he)記(ji)錄(lu)是(shi)很(hen)重(zhong)要(yao)的(de)。與(yu)傳(chuan)統(tong)的(de)生(sheng)產(chan)方(fang)式(shi)相(xiang)比(bi),無(wu)菌(jun)係(xi)統(tong)的(de)自(zi)動(dong)記(ji)錄(lu)和(he)監(jian)測(ce)任(ren)務(wu)要(yao)重(zhong)得(de)多(duo),這(zhe)是(shi)因(yin)為(wei)無(wu)菌(jun)包(bao)裝(zhuang)固(gu)有(you)技(ji)術(shu)的(de)複(fu)雜(za)性(xing)和(he)諸(zhu)多(duo)關(guan)鍵(jian)因(yin)子(zi)的(de)關(guan)聯(lian)性(xing)決(jue)定(ding)的(de)。
無菌包裝係統的記錄有兩類:一(yi)類(lei)是(shi)生(sheng)產(chan)記(ji)錄(lu),另(ling)一(yi)類(lei)是(shi)儀(yi)表(biao)記(ji)錄(lu)。儀(yi)表(biao)記(ji)錄(lu)提(ti)供(gong)了(le)無(wu)菌(jun)包(bao)裝(zhuang)係(xi)統(tong)操(cao)作(zuo)狀(zhuang)態(tai)的(de)連(lian)續(xu)性(xing)記(ji)錄(lu)。對(dui)於(yu)自(zi)動(dong)記(ji)錄(lu)儀(yi),操(cao)作(zuo)員(yuan)應(ying)保(bao)持(chi)記(ji)錄(lu)紙(zhi)清(qing)晰(xi),並(bing)標(biao)明(ming)開(kai)始(shi)殺(sha)菌(jun)、生產或殺菌結束、生sheng產chan結jie束shu的de時shi間jian。如ru果guo由you於yu基ji種zhong原yuan因yin如ru殺sha菌jun溫wen度du偏pian低di,無wu菌jun空kong氣qi壓ya力li不bu足zu或huo灌guan裝zhuang出chu現xian問wen題ti而er停ting止zhi生sheng產chan,在zai記ji錄lu紙zhi上shang應ying標biao明ming停ting止zhi生sheng產chan以yi及ji從cong新xin開kai始shi生sheng產chan的de時shi間jian。生sheng產chan記ji錄lu是shi無wu菌jun係xi統tong保bao持chi過guo程cheng中zhong的de手shou工gong記ji錄lu。操cao作zuo員yuan應ying該gai在zai記ji錄lu上shang寫xie明ming事shi情qing發fa生sheng的de時shi間jian以yi及ji與yu糾jiu正zheng行xing動dong有you關guan的de任ren何he信xin息xi。
對dui於yu無wu菌jun貯zhu罐guan,記ji錄lu應ying表biao明ming罐guan已yi經jing過guo殺sha菌jun,罐guan內nei無wu菌jun空kong氣qi的de壓ya力li是shi否fou正zheng常chang,如ru果guo無wu菌jun空kong氣qi是shi由you過guo濾lv器qi產chan生sheng的de,則ze過guo濾lv器qi以yi及ji無wu菌jun空kong氣qi供gong應ying係xi統tong的de殺sha菌jun溫wen度du和he時shi間jian應ying該gai監jian控kong並bing記ji錄lu。記ji錄lu還hai應ying明ming在zai生sheng產chan開kai始shi時shi滿man足zu其qi他ta關guan鍵jian因yin子zi的de要yao求qiu。過guo濾lv介jie質zhi應ying在zai適shi當dang的de時shi間jian間jian隔ge時shi行xing更geng換huan。
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