1、看價(jia)格:一般來說,約2.5公(gong)(gong)斤花(hua)(hua)生(sheng)能榨出1公(gong)(gong)斤花(hua)(hua)生(sheng)油(you)(you)和(he)1.5公(gong)(gong)斤油(you)(you)餅,生(sheng)產出1公(gong)(gong)斤花(hua)(hua)生(sheng)油(you)(you)的最低成(cheng)本約14元(yuan)。所以如(ru)果市場上賣的花(hua)(hua)生(sheng)油(you)(you)價(jia)格低于最低成(cheng)本,那很有可能是小作坊生(sheng)產的劣質(zhi)油(you)(you)。
2、看感觀:新鮮(xian)花(hua)(hua)生(sheng)榨(zha)出來的(de)花(hua)(hua)生(sheng)油色澤自(zi)然(ran),金黃明亮,聞起(qi)來具有花(hua)(hua)生(sheng)油的(de)天(tian)(tian)然(ran)濃郁(yu)香味。若(ruo)用(yong)霉爛或過了夏天(tian)(tian)的(de)花(hua)(hua)生(sheng)仁(ren)榨(zha)出來的(de)花(hua)(hua)生(sheng)油色澤深暗。
3、聞氣味(wei)(wei):用右(you)手(shou)指沾油少許(xu),在左手(shou)心中(zhong)猛搓幾下,然(ran)后立即嗅其氣味(wei)(wei),有濃郁純正花生油香、無異常味(wei)(wei)道的,可認為(wei)是(shi)上品。而摻(chan)入香精(jing)的花生油開始有微微的花生香味(wei)(wei),但是(shi)隨著(zhu)再次揉搓,這種(zhong)花生香味(wei)(wei)會(hui)越來越淡。
4、看凝固(gu)溫(wen)度(du)(du):花(hua)生(sheng)油(you)的凝固(gu)點為(wei)(wei)0-3攝(she)氏度(du)(du),棕櫚(lv)油(you)為(wei)(wei)27-30攝(she)氏度(du)(du),菜籽油(you)是零(ling)下12-零(ling)下10攝(she)氏度(du)(du)。將花(hua)生(sheng)油(you)放入(ru)冰(bing)箱冷藏室10分鐘左右,若油(you)發生(sheng)凝固(gu)現(xian)(xian)象,即(ji)可初步認(ren)定(ding)摻有棕櫚(lv)油(you);放入(ru)冰(bing)箱冷藏室約30分鐘左右,若油(you)出現(xian)(xian)分層(ceng)及凝固(gu)現(xian)(xian)象,即(ji)可初步認(ren)定(ding)摻有菜籽油(you)。