关键词: 可食性膜, 大豆分离蛋白, 制膜工艺

Abstract: With the raw material for filming like soy protein isolated,added with plasticizer like glycerin and reducing agent like sodium sulfite,the soy protein isolated film was made.The technology and reference data of laboratory and industrialized manufacturer on soy protein isolated film were studied in this article.The results showed that the technology and reference data of laboratory manufacture on soy protein isolated film are:water dissolving of soy protein isolated,heating,meanwhile stirring in the oar way with the speed of 180 r/min,antifoaming the film liquid by adding 0.06 % edible antifoaming agent,spreading film on the staingless steel board coated with 0.05 ml/100 cm2 Tween 80,drying for 2 hours under the hot wind of 60 ℃,drenching with water evenly,taking off the film and keeping in reserve.The technology and reference data of industrialized manufacture on soy protein isolated film are:water dissolving soy protein isolated in double layer pot,heating it,meanwhile stirring with the speed of 30 r/min,filming on the red copper belt and its speed 1.5 r/min,then ventilating water vapor to heat up dryer,with vapor pressure 0.25 MPa(surface pressure),rolling up the film,packaging and storing.This technology has been tested successfully and can be applied in expanding production.

Key words: edible film, soy protein isolated, filming technology