摘要
以玉米油中玉米赤霉烯酮(ZEN)脱除率为主要考察指标,以玉米油脱色效果为次要考察指标,研究吸附剂种类和吸附剂用量对玉米油中ZEN脱除效果和脱色效果的影响。结果表明:WY1活性炭对玉米油中ZEN的脱除效果优于其他吸附剂。当吸附剂用量为油重1%时,活性白土、凹凸棒石、WY1活性炭、WY2活性炭、普通活性炭及NORIT活性炭对玉米毛油中ZEN的脱除率分别为5.57%、10.73%、38.50%、11.10%、14.45%和17.35%,ZEN含量由8 026.67μg/kg分别降至7 579.28、7 165.38、4 936.46、7 135.34、6 867.12、6 634.27μg/kg。WY1活性炭用量2%时,ZEN脱除率达到48.25%,ZEN含量降至4 153.77μg/kg,明显高于欧盟要求400μg/kg的限量。因此,对于ZEN含量很高的玉米毛油,必须结合优化的碱炼脱酸及水蒸气蒸馏脱臭的精炼过程才能对ZEN进行系统和高效的脱除,但解决问题的根本是要严格控制待精炼玉米毛油的ZEN含量,即减少和控制玉米胚中ZEN含量,提高玉米胚质量。
With removal rate of zearalenone （ ZEN ） in maize oil as main index, bleaching effect as secondary index, the effect of removal of ZEN from maize oil by different absorbent types and absorbent dosage were studied. The results showed that the effect of activated carbon WY1 on removal of ZEN was better than other adsorbents. With the use of 1% activated clay, attapulgite, activated carbon WY1, activated carbon WY2, general activated carbon and activated carbon NORIT, the ZEN contents of crude maize oil were decreased from 8 026.67 gg/kg to 7 579.28,7 165.38,4 936.46, 7 135.34,6 632.26 and 6 634.27 gg/kg, respectively, which were significantly higher than the EU requirements that the limit of ZEN content in edible corn oil was set at 400 gg/kg. And the removal rates were 5.57%, 10.73%,38.50%, 11.10%, 17.37% and 17.35%, respectively. Therefore, the crude maize oil with high concentration of ZEN must be refined with optimized alkali refining and steaming deodorization. Then the ZEN was removed systematically and efficiently. But solving the root of the problem was to strictly control the ZEN content of crude maize oil. In other words, it was to control the ZEN content of corn germ strictly and improve the quality of corn germ.
出处
《粮食与油脂》
北大核心
2016年第9期6-10,共5页
Cereals & Oils
基金
公益性行业(农业)科研专项(201303072–2)
