摘要
为了提高浓缩苹果汁加工中苹果多酚的在线回收利用率,试验以经大孔吸附树脂吸附后的苹果多酚为原料,筛选出对棒曲霉素吸附能力强的树脂,并进一步利用HPLC检测。结果表明,LSA-900B型树脂对棒曲霉素吸附效果较好,并且处理后的苹果汁色值和透光率提高较多,糖度损失较小,对多酚的吸附能力较小。用LSA-21树脂吸附由腐烂率在5%左右苹果制得的苹果汁,得到苹果多酚经LSA-900B树脂处理后,苹果多酚样品中所含的酸性酚主要是绿原酸,此外还有咖啡酸、P-香豆酸等,中性酚主要有表儿茶素、芦丁、根皮苷、槲皮素,棒曲霉素含量为0.33μg/g。因此,把吸附多酚效果较好的LSA-21树脂和吸附棒曲霉素较好的LSA-900B树脂联合使用,不仅提高苹果汁色值和稳定性,还提高苹果多酚的安全性,使苹果多酚能够充分利用。
In order to improve the online recycling rates of apple polyphenol in the processing of concentrated apple juice,apple polyphenols adsorbed by macroporous resin is used as raw material and resin with patulin strong adsorption capacity isselected, and further the HPLC testing is used to support the result. The results show that the LSA-900B type resin has betterability of adsorption of patulin. After processing, the color and light transmittance values of apple juice not only increasedmore, but the loss of the sugar content and the polyphenol adsorption capacity both reduced. The apple polyphenol obtained bythe apple juice which is processed by apple of around 5% decay rate. After the treatment of LSA-900B resin, applepolyphenols contained in the sample are mainly acidic phenol chlorogenic acid, caffeic acid addition, P-coumaric acid, andneutral phenol mainly including epicatechin, rutin, phlorizin, quercetin. The determination ofpatulin was 0.33μg/g. Therefore,the method of the LSA-21 resin and LSA-900B resin used in combination not only improves the stability and color value ofapple juice, also improve the security of apple polyphenol. Finally, the apple polyphenols can be fully utilized.
出处
《食品工业》
北大核心
2014年第6期269-272,共4页
The Food Industry
基金
教育厅产业化培育项目(2011JG23)
西安市技术转移促进工程项目(CX1259(5))
