企業名稱(cheng):南寧凱宇興機械設備有(you)限公(gong)司
聯(lian)系(xi)人(ren):王先生(sheng)/龍女士
手機:18507716476/13878172279
網址:linxianbin.com.cn
地址(zhi):廣西省(sheng)南寧市天德路16號(hao)(hao)2-17號(hao)(hao)(沃爾沃斜對面)
冬天存放的(de)食用油里(li)出現(xian)絮狀物還能吃嗎?
油脂(zhi)(zhi)是(shi)(shi)脂(zhi)(zhi)肪(fang)酸甘油三酯。由于構成(cheng)(cheng)甘油三酯的(de)(de)(de)脂(zhi)(zhi)肪(fang)酸碳鏈長(chang)短不(bu)(bu)一,其形成(cheng)(cheng)結(jie)晶的(de)(de)(de)溫度(du)(du)不(bu)(bu)同(tong),晶體需要漸進過程(cheng)形成(cheng)(cheng),會(hui)(hui)呈現(xian)(xian)出幾種不(bu)(bu)同(tong)的(de)(de)(de)形態,如白色絮(xu)狀(zhuang)物(wu)、不(bu)(bu)透明糊狀(zhuang)、白色沉淀(dian)、白色結(jie)晶等,這(zhe)些都是(shi)(shi)正常的(de)(de)(de)物(wu)理(li)現(xian)(xian)象(xiang)。有些消費者擔心結(jie)凍(dong)的(de)(de)(de)油脂(zhi)(zhi)品(pin)質不(bu)(bu)佳,其實這(zhe)種擔心是(shi)(shi)完全沒有必要的(de)(de)(de)。隨(sui)著溫度(du)(du)的(de)(de)(de)變化,任何食(shi)用(yong)(yong)(yong)油都會(hui)(hui)發生程(cheng)度(du)(du)不(bu)(bu)一的(de)(de)(de)結(jie)凍(dong)現(xian)(xian)象(xiang),這(zhe)是(shi)(shi)食(shi)用(yong)(yong)(yong)油本(ben)身的(de)(de)(de)物(wu)理(li)特(te)性。結(jie)晶狀(zhuang)態與食(shi)用(yong)(yong)(yong)油的(de)(de)(de)運輸、儲藏等條件有關(guan),也與油脂(zhi)(zhi)的(de)(de)(de)品(pin)種有關(guan)。食(shi)用(yong)(yong)(yong)油結(jie)凍(dong)絲(si)毫不(bu)(bu)會(hui)(hui)影響其口(kou)感和品(pin)質。為了便于使(shi)用(yong)(yong)(yong),建(jian)議在(zai)(zai)冬天,消費者將食(shi)用(yong)(yong)(yong)植(zhi)物(wu)油放在(zai)(zai)20℃的(de)(de)(de)環(huan)境下。
吃什么(me)油(you)好?
從物(wu)(wu)(wu)理(li)性(xing)狀上(shang),將(jiang)“常溫”(15℃~20℃)下成液態的脂肪稱作(zuo)“油(you)”。從來源上(shang),又分為“植(zhi)物(wu)(wu)(wu)油(you)脂”和“動物(wu)(wu)(wu)油(you)脂”,簡稱“植(zhi)物(wu)(wu)(wu)油(you)”和“動物(wu)(wu)(wu)油(you)”。
植物(wu)油多數(shu)(shu)是液態(tai)的(de),少數(shu)(shu)也有固態(tai)(如棕擱油、椰子油等),而動物(wu)油則反之(zhi),多數(shu)(shu)為(wei)(wei)固態(tai),少數(shu)(shu)為(wei)(wei)液態(tai)(如魚類等)。
前面提到的必需脂(zhi)肪酸絕大多數存在(zai)于植(zhi)物油(you)(you)(you)(you)中,所(suo)以說食(shi)用(yong)植(zhi)物油(you)(you)(you)(you)是好的,因為動物油(you)(you)(you)(you)吃多了,會造成(cheng)血液“膽固醇”含量過高,易誘發(fa)心血管病。人們常選購的花(hua)生油(you)(you)(you)(you)、大豆油(you)(you)(you)(you)、油(you)(you)(you)(you)菜籽(zi)(zi)油(you)(you)(you)(you)、紅花(hua)籽(zi)(zi)油(you)(you)(you)(you)、葵(kui)花(hua)籽(zi)(zi)油(you)(you)(you)(you)、棉籽(zi)(zi)油(you)(you)(you)(you)、油(you)(you)(you)(you)茶籽(zi)(zi)油(you)(you)(you)(you)、芝麻油(you)(you)(you)(you)、玉米(mi)油(you)(you)(you)(you)乃至亞麻籽(zi)(zi)油(you)(you)(you)(you)等(deng)(deng)等(deng)(deng),只要品質有保證,都是理想的食(shi)用(yong)油(you)(you)(you)(you)。
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