一种改善糙米碾米性能的非浸泡复合酶法预处理工艺

Non-soaking composite enzyme method pre-treatment technology improving brown rice milling performance

Abstract

The invention discloses a non-soaking composite enzyme method pre-treatment technology improving brown rice milling performance. Before brown rice milling, under a certain temperature condition, according to a certain liquid adding amount, a food grade cellulase and xylanase composite enzyme solution with a certain ratio, concentration and PH is sprayed to brown rice, so that proper rice milling water content is achieved, and sealing processing is carried out for a while under the condition. Brown rice moisture is adjusted, meanwhile, grain cortex is subjected to micro degradation, so that cortex intensity is lowered, milling force needed for milling is lowered, accordingly, broken rice production during a rice milling process is lowered, and rice milling energy loss is lowered. Compared with a single enzymolysis technology, the composite enzyme pre-treatment technology can improve enzymolysis efficiency and save cost, safety is achieved, toxic and side effects are avoided, the yield of high-quality finished product rice can be well improved, and the energy using rate is improved.
本发明公开了一种改善糙米碾米性能的非浸泡酶法预处理工艺。糙米在碾米加工前,在一定温度条件下按一定加液量,对其喷加一定配比、浓度、PH的食品级纤维素酶与木聚糖酶复合酶溶液,使其达到适宜碾米含水率,并在该条件下密闭处理一段时间。其目的是在调整糙米水分的同时对籽粒皮层进行微量降解,以此来降低皮层强度,减小碾磨所需碾削力,从而减少碾米过程碎米产生、降低碾米能耗。本发明方法采用的复合酶预处理技术相比于单一酶解工艺可提高酶解效率、节约成本且安全无毒副作用,有利于提升优质成品大米的得率,提高能源利用率。

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