1、看價格:一般來說,約2.5公(gong)(gong)斤(jin)花生(sheng)(sheng)(sheng)能榨(zha)出(chu)1公(gong)(gong)斤(jin)花生(sheng)(sheng)(sheng)油(you)(you)和1.5公(gong)(gong)斤(jin)油(you)(you)餅,生(sheng)(sheng)(sheng)產出(chu)1公(gong)(gong)斤(jin)花生(sheng)(sheng)(sheng)油(you)(you)的最低成本約14元。所以(yi)如果市場(chang)上(shang)賣(mai)的花生(sheng)(sheng)(sheng)油(you)(you)價格低于最低成本,那很有可能是小(xiao)作(zuo)坊生(sheng)(sheng)(sheng)產的劣質油(you)(you)。
2、看感觀:新鮮(xian)花(hua)生(sheng)榨出來(lai)的花(hua)生(sheng)油色(se)澤(ze)自然(ran),金黃(huang)明亮,聞起來(lai)具有花(hua)生(sheng)油的天然(ran)濃(nong)郁(yu)香味(wei)。若用(yong)霉爛或過(guo)了夏天的花(hua)生(sheng)仁(ren)榨出來(lai)的花(hua)生(sheng)油色(se)澤(ze)深(shen)暗(an)。
3、聞氣味:用(yong)右手(shou)指沾油(you)少許(xu),在左(zuo)手(shou)心中猛(meng)搓幾下,然后立即嗅(xiu)其氣味,有濃郁純正花(hua)生(sheng)油(you)香(xiang)、無異(yi)常味道的,可(ke)認為是上品。而摻入(ru)香(xiang)精的花(hua)生(sheng)油(you)開(kai)始有微微的花(hua)生(sheng)香(xiang)味,但(dan)是隨著再次揉(rou)搓,這種花(hua)生(sheng)香(xiang)味會(hui)越來(lai)越淡。
4、看凝(ning)固溫度:花(hua)生油的凝(ning)固點為0-3攝(she)氏度,棕櫚(lv)油為27-30攝(she)氏度,菜籽油是零(ling)下12-零(ling)下10攝(she)氏度。將花(hua)生油放入冰(bing)(bing)箱冷藏(zang)室(shi)10分(fen)(fen)(fen)鐘(zhong)左右(you),若(ruo)油發生凝(ning)固現象,即可(ke)初(chu)步認定摻有棕櫚(lv)油;放入冰(bing)(bing)箱冷藏(zang)室(shi)約(yue)30分(fen)(fen)(fen)鐘(zhong)左右(you),若(ruo)油出現分(fen)(fen)(fen)層及凝(ning)固現象,即可(ke)初(chu)步認定摻有菜籽油。