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如何分辨奶油質(zhì)量優(yōu)劣

奶油一般分為稀奶油和奶油。將牛乳中脂肪分離出來,經(jīng)巴氏殺菌而制成的產(chǎn)品為稀奶油。稀奶油經(jīng)殺菌、成熟、攪拌、壓煉而成的成為奶油(黃油)。

優(yōu)質(zhì)奶油呈微黃色或奶白色,色澤均勻一致,有光澤,沒有斑點及波紋。帶有奶油固有的純正香味,無其他異味。組織形態(tài)均勻緊密,稠度彈性適宜,橫斷面整齊,不出水滴。外形包裝整潔、美觀,無缺陷。

次質(zhì)奶油色澤較差,顏色過淡或過度、不均勻,無光澤,有斑點。香味平淡,有時有少量空隙或橫斷面,有水滴析出。外形包裝可見污跡或內(nèi)包裝紙有油滲出,有缺陷。

劣質(zhì)奶油色澤不均勻,表面有霉斑、變質(zhì),外表有水,有酸敗味,腥味、苦味、飲料味、牛棚氣味、變質(zhì)脂味。組織形態(tài)不均勻、黏軟,橫斷切面有水滴,呈白色渾濁,無彈性,有空隙及風(fēng)干現(xiàn)象。外形包裝不整齊或不完整,有破損,有可見污斑,內(nèi)包裝紙有油滲出,有缺陷。
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