1、看(kan)價(jia)格:一(yi)般來說,約2.5公(gong)斤(jin)花(hua)生(sheng)(sheng)(sheng)能榨(zha)出(chu)1公(gong)斤(jin)花(hua)生(sheng)(sheng)(sheng)油(you)和1.5公(gong)斤(jin)油(you)餅,生(sheng)(sheng)(sheng)產出(chu)1公(gong)斤(jin)花(hua)生(sheng)(sheng)(sheng)油(you)的最低成本約14元。所以如果(guo)市場(chang)上賣的花(hua)生(sheng)(sheng)(sheng)油(you)價(jia)格低于最低成本,那很(hen)有(you)可能是小作坊(fang)生(sheng)(sheng)(sheng)產的劣質油(you)。
2、看(kan)感觀:新鮮花(hua)生(sheng)榨出(chu)來(lai)的(de)花(hua)生(sheng)油色(se)澤(ze)自(zi)然,金黃明亮,聞起來(lai)具有花(hua)生(sheng)油的(de)天然濃郁香(xiang)味。若用霉爛或過(guo)了夏天的(de)花(hua)生(sheng)仁榨出(chu)來(lai)的(de)花(hua)生(sheng)油色(se)澤(ze)深(shen)暗(an)。
3、聞氣(qi)味(wei):用(yong)右手(shou)(shou)指沾油少許,在左(zuo)手(shou)(shou)心(xin)中(zhong)猛搓幾(ji)下,然后立即嗅其氣(qi)味(wei),有濃郁純正花生(sheng)油香(xiang)、無異常味(wei)道的(de)(de),可認(ren)為是(shi)上品。而摻入(ru)香(xiang)精的(de)(de)花生(sheng)油開始有微微的(de)(de)花生(sheng)香(xiang)味(wei),但是(shi)隨(sui)著再次揉搓,這(zhe)種花生(sheng)香(xiang)味(wei)會越(yue)來越(yue)淡(dan)。
4、看(kan)凝(ning)固(gu)(gu)溫度(du):花生油(you)(you)的凝(ning)固(gu)(gu)點為0-3攝(she)氏度(du),棕櫚(lv)油(you)(you)為27-30攝(she)氏度(du),菜(cai)籽(zi)油(you)(you)是零(ling)下(xia)12-零(ling)下(xia)10攝(she)氏度(du)。將花生油(you)(you)放入冰箱(xiang)冷(leng)藏室(shi)10分(fen)鐘(zhong)左右,若油(you)(you)發生凝(ning)固(gu)(gu)現(xian)象(xiang),即(ji)可初步(bu)認定摻有棕櫚(lv)油(you)(you);放入冰箱(xiang)冷(leng)藏室(shi)約30分(fen)鐘(zhong)左右,若油(you)(you)出現(xian)分(fen)層及凝(ning)固(gu)(gu)現(xian)象(xiang),即(ji)可初步(bu)認定摻有菜(cai)籽(zi)油(you)(you)。