膨化玉米营养粉的研制

本试验中,将膨化谷物食品与乳粉配合以达到氨基酸的互补作用,提高谷物的营养价值。同时,寻求膨化谷物食品、乳粉、及其他添加剂的最佳配方,并讨论了挤压膨化中原料的成分、理化性质等对膨化成品的影响。经试验表明,控制原材料的水分含量在13%￣18%之间,以小米∶玉米1∶4的比例进行挤压膨化,以膨化物料为12%,植脂末为12%,奶粉为7%,白砂糖为4%的配比最佳。     

苦荞麦营养粉挤压膨化的工艺参数及配方优化

利用ＱＰＳ６５×２型双螺杆菌挤压膨化机对苦荞麦营养成分与其他粉料（籼稻大米粉，糯发，面粉）的配比及挤压螺杆转速，进料量，套筒温度（后三段）等参数进行了研究，结果表明在苦荞麦营养粉与籼稻大米粉比例为８０：２０，螺杆转速为３００ｒ／ｍｉｎ，进料量为４５０ｇ／ｍｉｎ，温度为１４０℃时，制得膨经效果最好的制品。     

膨化青稞苦荞复合营养粉的研制

利用青稞和荞麦为主要原料,经过制粉、挤压膨化、粉碎、混合、包装等工艺开发出冲调型复合营养粉。采用正交试验得到最优工艺参数:膨化青稞粉与苦荞粉比例3∶1,乳清蛋白粉35%,麦香粉末香精1.0%,木糖醇15%,最适冲调水量为全粉质量的6倍。按最优配方配制的复合营养粉感官品质优良,冲调性好,其β-葡聚糖含量平均为1.97%,生物类黄酮含量平均为0.25%,蛋白质含量平均为18.44%,水分平均为4.1%。     

速溶核桃营养粉加工工艺研究

速溶核桃营养粉是以核桃为主料，大豆、玉米为辅料，合理配方，经一系列科学工艺加工而成的营养保健品，具有营养全面，搭配合理，风味独特的优点，是老人和儿童的上等营养补品。     

挤压膨化速溶婴幼儿营养米粉的研制

本文探讨了以挤压膨化大米为原料,制作速溶婴幼儿营养米粉的加工工艺。通过正交试验确定了最优的大米挤压膨化工艺参数为：大米粉水分含量为18％,螺杆转数为300r／min,模头温度为150℃;确定了米粉与奶粉、白砂糖等的最佳配比方案。配方为：米粉65％、全脂奶粉8％、白砂糖18％,并加入少量盐、植物油、维生素、矿物质等。     

速食营养粉加工工艺的研究

利用糙米、大豆、玉米、花生、红薯为主要生产原料,以高粱米、小米、绿豆、黑豆、红小豆、燕麦、大枣、黑芝麻、核桃仁为辅料,经过烘炒、混合调配、挤压膨化等工艺生产出口感细腻、营养全面、冲调方便的速食营养粉产品。对各种原辅材料的烘炒条件和挤压膨化工艺进行了研究分析,结果表明:糙米、大豆、绿豆、黑豆、黑芝麻、核桃仁的最佳烘炒条件为100℃/15min,玉米、花生、高粱米、红豆、燕麦的最佳烘炒条件为100℃/20min,小米的最佳烘炒条件为100℃/10min;最佳的挤压膨化工艺参数是:物料粒度60目、物料含水量17%、膨化温度160℃、螺杆转速400r/min。     

双螺杆挤压技术膨化玉米粉研究

本文介绍了用双螺杆挤压膨化玉米粉的试验研究，分析了原料水分、粒度和螺杆转速对膨化性能的影响，得到了最节能的工作参数组合。     

澎化玉米营养粉的研制

本试验中，将膨化谷物食品与乳粉配合以达到氨基酸的互补作用，提高谷物的营养价值。同时，寻求膨化谷物食品、乳粉、及其他添加剂的最佳配方，并讨论了挤压膨化中原料的成分、理化性质等对膨化成品的影响。经试验表明，控制原材料的水分含量在13％-18％之间，以小米：玉米1：4的比例进行挤压膨化，以膨化物料为12％，植脂末为12％，奶粉为7％，白砂糖为4％的配比最佳。     

挤压膨化茯苓复合营养粉冲调性研究及营养评价

为研发具药食功效的茯苓复合营养粉,将茯苓以10%,20%,30%,40%的添加量分别与薏米、红米、碎稻米混合后,采用双螺杆挤压膨化制成营养粉,对其冲调特性及感官进行跟踪测定及评价。结果表明,在茯苓添加量为20%的条件下,复合营养粉不仅糊化度、膨化度、水溶性指数(WSI)、吸水指数(WAI)、黏度、鼻饲管流动性、分散时间、分散稳定时间等冲调特性及感官较好,而且茯苓水溶性多糖含量增加了53.96%~59.38%,同时富集了薏苡仁酯或红米多酚等功能成分。     

膨化大米营养粉的工艺研究及配方

<正>大米是人类的主要食物.长期以来,大米加工制品的口感、营养、“回生”、贮存等问题一直是影响其发展的主要原因.本研究采用机械膨化技术处理大米,提高了大米的消化利用率和营养价值,改善了口感,从根本上解决了“回生”和不耐贮存等问题.在大量试验的基础上,确定了最佳膨化工艺,为膨化机的改进设     

膨化糯玉米粉仿乳饮料稳定性研究

以膨化糯玉米粉为主要原料,辅以红枣、莲子等药食两用保健材料,制成膨化糯玉米粉仿乳饮料,并对其乳化稳定性进行研究,得到膨化糯玉米粉仿乳饮料最佳辅料配比为:红枣3%、莲子3%、蔗糖8%、奶粉1.5%。最佳稳定剂配方为:黄原胶1.5%、CMC-Na0.5%、单甘酯1.0%。     

A comparison of the quality of whole corn tortillas made from instant corn flours by traditional or extrusion processing

Summary The nutritional quality (chemical and biological assays) was evaluated for tortillas made with two samples of instant corn flour prepared with 0.15 and 0.25% calcium hydroxide and processed either by extrusion or by the traditional process (nixtamalization). Both raw corn and the tortillas made from instant whole corn flours prepared by extrusion (TEP) had higher Protein Efficiency Ratio (PER), and Net Protein Utilization (NPU) values ( p < 0.05) than tortillas prepared from traditional nixtamalization process. The Ca assimilation in the femurs bones of rats fed with raw corn, TEP (with 0.25% lime), and tortillas prepared from the nixtamal process, yielded lower values ( p < 0.05) as compared with those shown by the rats fed with the other treatments of TEP (with 0.15% lime). The Ca, Mg, and P contents and protein quality of the treatments used in the feed affected some physical characteristics rat femurs (length, diameter, weight, breaking force, volume and density). The force required to break the femurs of rats fed diets of raw corn, tortillas prepared using the traditional process and without added protein, was measured and compared with the force required to break the femurs of rats fed with diets contain casein and TEP with either 0.15 and 0 0.25% lime. Those animals assimilating the lowest content of lime had the weakest femurs.     

新型糯玉米保健醋的工艺研究

以香白糯玉米为原料,采用固态发酵工艺,通过正交试验确定糯玉米醋的最佳工艺条件:在温度33℃、糖度为18°和pH为4.4,进行酒精发酵3d;酒精发酵结束后在酒精度9%,温度38℃,发酵酸度为1.4%时开始进入醋酸发酵,发酵4d,最后经调配灌装杀菌即可得营养丰富、具有糯玉米特征、澄清透明的糯玉米醋。     

Production response to corn silage produced from normal, brown midrib, or waxy corn hybrids

The objective was to evaluate the nutrient intake and digestibility and milk production response of lactating dairy cows fed diets based on corn silage produced from 3 different types of corn hybrids. Experimental diets contained 36.4% of the dietary dry matter (DM) from corn silage produced from normal (Agratech 1021, AgraTech Seeds Inc., Atlanta, GA), brown midrib (BMR; Mycogen F2F797, Mycogen Seeds, Indianapolis, IN), or waxy (Master's Choice 590, Master's Choice Hybrids, Ullin, IL) hybrids. Thirty-six multiparous and primiparous Holstein cows (66 ± 22 d in milk, 41 ± 8 kg/d of milk) were used in an 11-wk completely randomized design trial during the fall of 2009. All cows were fed a diet containing normal corn silage during the first 2wk of the trial before being assigned to 1 of 3 treatments for the following 9 wk. Data collected during the first 2 wk were used as a covariate in the statistical analysis. No difference was observed in dry matter intake (DMI) among treatments, which averaged 22.6 kg/d. Milk yield was higher for cows fed BMR (37.6 kg/d) compared with waxy (35.2 kg/d) but was similar to that of cows fed control (36.2 kg/d). Milk fat percentage tended to be lower for cows fed control (3.28%) compared with those fed BMR (3.60%) or waxy (3.55%) corn silage. Milk protein percentage tended to be lower for cows fed control (2.79%) compared with waxy (2.89%) but similar to that of those fed BMR (2.85%). No differences were observed in yield of milk components. Energy-corrected milk (ECM) yield and dairy efficiency (ECM:DMI) did not differ among treatments. Cows fed BMR tended to gain more body weight compared with those fed control and waxy. Results of this trial are consistent with previous reports in which cows fed diets based on corn silage produced from BMR hybrids have higher milk yield compared with those fed other hybrids. Corn silage produced from the waxy hybrid supported a similar yield of ECM because of higher milk components, but milk yield was not improved compared with the control.     

浑浊型玉米浆玉米须复合饮料的研制

研究浑浊型玉米浆玉米须复合饮料的制备工艺。重点探讨糖、酸等辅料添加量,复合稳定剂配方及均质工艺对产品品质的影响。结果表明,该复合饮料的最佳配方为玉米原浆与玉米须提取液体积比1∶1,蔗糖7%,乳酸0.03%,盐0.10%,琼脂0.02%,黄原胶0.1%,CMC 0.15%,蔗糖酯0.1%;最佳均质工艺为二次均质工艺,处理温度60℃,第一次均质压力20MPa、第二次均质压力25MPa。     

蜡质玉米粉的糊化特性研究

为了解蜡质玉米粉及其不同制粉方法对糊化特性的影响,测定了干磨、湿磨、挤压制蜡质玉米粉以及蜡质玉米淀粉、糯米粉的溶胀度和RVA参数。结果表明:蜡质玉米粉糊化进程中溶胀度高,水合能力强,具有较高的糊化参数。不同品种蜡质玉米粉的破损值、谷值、峰值和终黏度的变异程度较大,蜡质玉米粉的峰值与谷值、终粘度和回生值、谷值与回生值、谷值与终粘度、终粘度与回生值均呈极显著正相关。湿法制粉糊化进程中水合能力强,主要RVA参数显著高于干法制粉和挤压制粉,具备很强的成糊能力和黏滞性,干法制粉成糊后稳定较好,抗老化性较强,挤压制粉的糊化进程不明显。     

双醛蜡质玉米淀粉的制备与特性研究

以蜡质玉米淀粉为原料,高碘酸钠为氧化剂,通过单因素实验,得到双醛淀粉制备的最优工艺条件:高碘酸钠与淀粉物质的量之比1.1:1,反应pH3.0,温度30℃,反应时间2h,淀粉乳浓度8%,得到的双醛淀粉中醛基含量为87.36%。偏光显微镜图片显示,样品醛基含量越高,偏光十字越少;通过红外图谱的表征,发现在波长为1729cm-1处出现明显的吸收峰,说明反应产物中有醛基存在;布拉班德粘度曲线表明,双醛淀粉的起糊温度比原淀粉高,峰值粘度随氧化度的升高而降低;X-射线衍射图谱表明,强峰吸收随着醛基含量的升高而消失,说明淀粉的结晶结构被破坏。     

玉米淀粉加工副产物玉米蛋白粉的应用与开发

玉米作为重要的粮食作物,对人们的生活影响越来越大,对玉米的精深加工综合利用及其营养价值的开发也越来越得到人们的关注。本文重点介绍了玉米的营养成分含量及缺陷,玉米淀粉加工副产物蛋白粉的应用状况及国内外对玉米蛋白的研究开发,玉米生物活性肽的生产工艺流程、活性肽的性能及应用。用玉米蛋白粉开发高附加值产品玉米生物活性肽是当前玉米淀粉加工企业转型优化升级重要的出路之一,对提升行业经济效益促进科技进步有重要意义。     

食用糯玉米淀粉醋酸酯制备和性质研究

选用糯玉米淀粉为原料,考察pH值、反应温度、反应时间、醋酸酐用量等因素对糯玉米淀粉醋酸酯取代度和反应效率影响;通过正交试验得到制备糯玉米淀粉醋酸酯最佳工艺条件,并对产品的糊透明度、粘度性质等进行研究。