共查询到19条相似文献,搜索用时 71 毫秒
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大豆磷脂不仅具有特殊的营养价值及生理功效,而且是一种性能优良的天然表面活性剂,将其添加入冰淇淋中,通过正交试验,从冰淇淋的膨胀率、抗融性、咀嚼性和硬度4个方面进行分析,得出了大豆磷脂在冰淇淋中的最佳用量为0.4%,同时指出大豆磷脂具有乳化、软化、润湿、分散、渗透、增溶、消泡及抗氧化等功能,与其它胶体具有良好的协同作用. 相似文献
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磺化大豆磷脂新型加脂剂的研制和应用 总被引:8,自引:2,他引:6
以大豆磷脂为原料,采用SO3气相连续膜式磺化技术进行磺化反应,使磺化大豆磷脂HLB值达12-16,再经中和,脱钯等步骤制得色泽浅谈,具有 水,乳化,渗透,低泡等性能的可生物降解的表面活性剂。本文研究了膜式磺化反应器夹套水温,进料温度,SO3/空气流量,保护风流量等对产品质量的影响。 相似文献
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近几年来,我厂依靠科技进步,积极开发大豆磷脂系列产品,同国内贸易部郑州粮食学院合作,承担国家“七五”、“八五”大豆磷脂重点科技攻关项目.目前已建成大豆磷脂深加工生产线,先后开发和研制出精制浓缩大豆磷脂、粉末大豆磷脂、卵磷脂、磷脂冲剂、片剂和磷脂软胶囊系列产品.磷脂产品早被世界各国列为安全的,多用途的天然食品添加剂.常作为乳化剂、分散剂、粘度调合剂、润湿剂、防油喷溅剂、膨松剂、抗氧化剂、谷物改良剂及强化食品营养剂等之用,广泛用于食品、医药、石油化工、轻纺、橡胶,油漆涂料、农药、植物保护制品、饲料及化妆品等行业. 相似文献
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大豆磷脂国内外市场和开发 总被引:9,自引:1,他引:8
<正>一 发展迅速 磷脂是一种含磷的类脂物质,由一些具有表面活性物质组成的混合物,广泛存在于动植物界。动物界以蛋黄含量最多,为8~10%;其次为牛脑,含量在6%左右。植物界以大豆含量最多,为全豆的1.6~2.0%,油脚含量为2.7~3.2%;其次为棉籽、全籽为0.7~1.2%,棉籽油为1.7~1.9%。 市售的磷脂,习惯均称为卵磷脂(LECITHIN),常见的市售商品有来自蛋黄的蛋黄磷脂,来自大豆毛油水化脱胶油脚的大豆磷脂或大豆卵磷脂。 相似文献
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以豆乳代替部分牛乳并用开菲尔进行发酵,研制出开菲尔酸豆乳冰淇淋。选择煮浆时间、豆粉奶粉比例、白砂糖添加量、复合乳化稳定剂添加量、老化时间和凝冻档位作为单因素进行梯度实验,对发酵时间、接种量和发酵温度进行三因素三水平L9(33)正交实验,确定开菲尔酸豆乳冰淇淋的最佳工艺为:取浸泡好的大豆,与水按照1∶11的比例进行磨浆,过滤,沸腾后煮浆5 min,制得豆乳;以豆浆重量为基准,加入8%豆粉、5%奶粉、16%白砂糖和0.65%复合乳化稳定剂,倒入制浆机中搅拌并杀菌,待均质后的料液冷却到38℃加入料液总质量0.2%的开菲尔发酵剂,38℃发酵8 h,得到发酵乳;将发酵乳置于4℃老化缸中老化4 h,然后将料液倒入冰淇淋机器设置成三档(凝冻温度-7℃),制得开菲尔酸豆乳冰淇淋。 相似文献
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Ice crystal growth and microstructure of sugarsolutions prepared with stabilizers (carboxymethyl cellulose [CMC], xanthan gum, locust bean gum [LBG], and gelatin) with or without milk solids-nonfat (MSNF) after freezing in a scraped surface heat exchanger and temperature cycling (5 cycles from -6 degrees C to -20 degrees C) were studied. Ice crystal growth was calculated from brightfield microscopic images acquired from samples before and after cycling. Freeze-substitution and low-temperature embedding (LR-Gold resin) were sample preparation techniques utilized for structure analyses by light microscopy and transmission electron microscopy. Differential staining for carbohydrates and proteins allowed the identification of stabilizer gel-like structures in LBG, gelatin, and gelatin/MSNF solutions. In the absence of milk proteins, xanthan and LBG were the most effective at retarding recrystallization, while in their presence, only xanthan had an effect. Cryo-gelation of the LBG was observed but is not the only mechanism of stabilizer action. Thermodynamic incompatibility between biopolymers was observed to promote localized high concentrations of milk proteins located at the ice crystal interface, probably exerting a water-holding action that significantly enhanced the stabilizer effect. Qualitatively, solution heterogeneity (phase separation) was directly proportional to ice crystal growth inhibition. It is suggested that water-holding by stabilizer and proteins, and in some cases steric hindrance induced by a stabilizer gel-like network, caused a reduction in the kinetics of the ice recrystallization phenomena and promoted mechanisms of melt-regrow instead of melt-diffuse-grow recrystallization, thus resulting in the preservation of the ice crystal size and in a small span of the ice crystal size distribution. 相似文献
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