玉米胚芽饮料的研制

通过对玉米胚芽饮料的风味，口感及稳定性等方面的讨论，确定了最佳工艺和配方，研制出具有较高营养保健功效的饮品。     

含酒精型玉米发泡饮料的工艺研究

对以玉米为主要原料，以啤酒酵母为菌种，发酵酿制低酒精度的发泡饮料进行了研究。通过试验确定了蒸煮最佳工艺条件，时间为50min，打浆加水比为1：4，菌种的用量为10％；液化温度70℃、25min、pH5．5、α-淀粉酶用量0．25％：糖化温度61℃、1h、pH4．5、糖化酶用量0．5％：发酵温度15℃、48h、pH6．5、啤油酵母用量10％。酿制的产品具有千米特有的香味和营养价值。     

复合米露的研制

研究了经水解、焙烤等过程制作小米、玉米、大豆复合饮料的生产技术,确定了原料的配比、焙烤方法以及稳定剂的配比、浓度。     

Fermented sugarcane and pineapple beverage produced using Saccharomyces cerevisiae and non‐Saccharomyces yeast

The potential of Saccharomyces cerevisiae (strains UFLA CA11 and UFLA FW15) and Pichia caribbica (UFLA CAF733) to produce a fermented sugarcane and pineapple drink was evaluated. Co‐ and pure cultures using different proportions of sugarcane juice and pineapple pulp (80:20, 70:30 and 60:40) were prepared. The sugar concentration of the must was adjusted to 16° Brix and was inoculated with approximately 7 log CFU/mL. After a preliminary test and based on higher concentrations of desirable volatile components, low production of acetic acid, high production of ethanol, and kinetic parameters, P. caribbica was chosen to perform the fermentation in 5 L batches. The fermentation performed with P. caribbica in the proportion of 60:40 showed a yield in ethanol of 0.45 g/g, an ethanol productivity of 1.32 g/L/h and a fermentation efficiency of 88.22%. The maximum ethanol concentration was 79.78 g/L and P. caribbica increased concentrations of desirable volatile compounds, such as 2‐phenyethanol, 2‐methyl‐1‐propanol, 3‐methyl‐1‐butanol, ethyl acetate and phenylethyl acetate. Copyright © 2015 The Institute of Brewing & Distilling     

玉米饮料的研究现状与发展前景

玉米被称为"黄金食品",具有多种营养成分及生理功能。将玉米加工成饮料,使吃玉米变成"喝玉米",不但保留了玉米中的营养成分,而且饮用方便,口感清新自然,风味独特,更易于人体吸收。近年来,将玉米与水果、蔬菜等复合而成的复合型的玉米饮料,因其营养价值高,符合目前消费者和市场的需求,成为玉米饮料发展的新机遇。本文综合分析了相关文献的研究现状,对玉米饮料从加工工艺、分类、稳定性研究等方面进行了综述,旨在为以后玉米饮料的研究与发展提供较为全面的参考。     

甜玉米酸乳饮料的研制

以甜玉米为原料与酸奶调配研制营养风味俱佳的甜玉米酸奶保健饮料.通过单因素实验结果表明,制作出的产品风味口感和稳定性均较好.实验对饮料配方及稳定性等关键因素进行了较详细的研究和探讨.经多次实验和感官鉴评确定,饮料的最佳配方为酸奶30％,甜玉米汁15％,蔗糖8％,柠檬酸0.02％.单一的稳定剂稳定效果很差,选用复合稳定剂.最佳参数组合:果胶0.15％,CMC0.3％,单甘酯0.04％,黄原胶0.02％,甜玉米酸乳饮料稳定性最好.     

玉米乳酸菌饮料的工艺研究

以玉米为原料,采用全酶法糖化工艺与多株乳酸菌互生发酵相结合的方法,在37℃条件下对玉米酶解液发酵48h。发酵液经过滤后加适量的砂糖、柠檬酸及复合稳定剂,可调制成酸甜可口、富含多种氨基酸的乳酸发酵饮料。     

芦荟发酵酒饮料的研制

以芦荟汁为原料,采用酵母菌发酵生产出具有宜人风味和保健功能的酒饮料。通过正交试验,得到发酵酒饮料的最佳工艺条件为发酵原液芦荟汁浓度40%、酵母菌接种量10%,发酵温度27℃,发酵时间5d。     

Characterisation of volatile compounds in an alcoholic beverage produced by whey fermentation

An alcoholic beverage (35.4% v/v ethanol) was produced by distillation of the fermented broth obtained by continuous whey fermentation with a lactose-fermenting yeast Kluyveromyces marxianus. Forty volatile compounds were identified in this drink by gas chromatography. Higher alcohols were the most abundant group of volatile compounds present, with isoamyl, isobutyl, 1-propanol, and isopentyl alcohols being found in highest quantities (887, 542, 266, and 176 mg/l, respectively). Ethyl acetate had the highest concentration (138 mg/l) among the esters. Besides higher alcohols and esters, other components, including aldehydes, acids and terpenes were also identified in the whey spirit. Considering that the quality of an alcoholic beverage can be evaluated by the relation between isoamyl alcohol/2-methyl-1-propanol and 2-methyl-1-propanol/1-propanol, which have to be higher than unity, it was concluded that a novel spirit of acceptable organoleptic characteristics can be produced by cheese whey continuous fermentation with K. marxianus.     

玉米胚芽乳饮料的制备研究

以干法玉米胚芽为原料,对玉米胚芽乳饮料的生产进行研究,探讨酶解工艺条件及原辅料对产品稳定性的影响,确定玉米胚芽乳饮料的加工工艺。     

木薯淀粉与玉米淀粉用于生产淀粉糖浆的对比研究

根据淀粉糖的生产工艺,对比研究木薯淀粉及玉米淀粉对淀粉糖浆质量及生产成本的影响。试验结果表明,玉米淀粉作为生产淀粉糖浆的原料效果较好。     

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%。     

Validation of analytical method for α‐dicarbonyl compounds using gas chromatography–nitrogen phosphorous detector and their levels in alcoholic beverages

This study aimed to establish an analytical method for α‐dicarbonyl compounds (α‐DCs) including glyoxal, methylglyoxal and diacetyl, to determine the content of α‐DCs in 101 various alcoholic beverages using gas chromatography–nitrogen phosphorous detector (GC‐NPD) and to perform exposure assessment. The limit of detection and limit of quantification for α‐DCs were 0.05–0.22 and 0.15–0.70 μg g^?1, respectively. The accuracy and precision were validated in five matrices. The raspberry fruit wine had the highest value at 139.74 μg g^?1 total α‐DCs. The lowest α‐DC concentration among the beverages was detected in rice wine (Makgeolli) at 1.59 μg g^?1. The levels of α‐DCs in various samples were detected as follows: 1.59–56.68 μg g^?1 in rice wine (Makgeolli), 2.73–16.77 μg g^?1 in beer, 8.22–139.74 μg g^?1 in fruit wine and 8.17–91.56 μg g^?1 in rice wine (Cheongju). The estimated daily intake of α‐DCs in the intake‐only group and population group was calculated as 4.22–97.94 μg kg^?1 bw day^?1 and 0.28–7.13 μg kg^?1 bw day^?1, respectively.     

气相色谱-质谱联用法测定玉米汁中敌敌畏和 马拉硫磷的含量

目的建立高灵敏度、精确度的敌敌畏和马拉硫磷的检测方法。方法利用DB-17MS(30 m×0.25 mm,0.25μm)色谱柱及气质联用色谱建立敌敌畏和马拉硫磷的检测条件,确定检出物的保留时间,绘制基于含量-峰面积线性关系的标准曲线。测定长春市市售玉米汁中的敌敌畏、马拉硫磷的含量,并根据标准曲线对结果进行分析计算。结果敌敌畏、马拉硫磷的标准曲线分别为:Y=0.0096X2+44.561X-100.48,Y=0.0023X2+36.339X+341.95,相关系数均为0.9999。长春市售玉米汁中未检出敌敌畏、马拉硫磷。结论本方法准确、可靠,可为玉米汁中有毒有害物质的检验提供参考。     

玉米肽抗氧化稳定性研究及其饮料的研制

目的 探究加工条件和原辅料对玉米肽抗氧化活性的影响, 并优化玉米肽饮料的配方。方法 通过单因素、正交试验探究温度、蔗糖、柠檬酸、维生素C(vitamin C, VC)和羧甲基纤维素对胃蛋白酶和嗜热菌蛋白酶水产物制得的分子量小于1000 Da的玉米肽活性的影响, 并优化玉米肽饮料的配方。结果 玉米肽具有较好的热稳定性, 在100 ℃ 180 min热处理条件下, 其DPPH自由基清除率可保持88.79%; 蔗糖、柠檬酸和VC对玉米肽的1, 1-二苯基-2-三硝基苯肼(1, 1-diphenyl-2-picrylhydrazyl, DPPH)自由基清除活性均有显著的增强作用, 羧甲基纤维素钠(carboxymethylcellulose sodium, CMC)对玉米肽的DPPH自由基清除活性具有一定的抑制作用。玉米肽饮料的最佳配方为, 在玉米肽添加2.5%的前提下, 蔗糖、柠檬酸、VC、CMC、添加量分别为11%、0.4%、0.03%和0.3%。结论 制得的玉米肽饮料具有良好的口感和抗氧化活性, 其DPPH自由基清除率为84.7%(σ=1.31%)。     

彩色糯玉米茶醋饮料的工艺研究

以4种彩色糯玉米为原料,茶汤为发酵底液,通过固态发酵法酿制茶醋.比较了4种糯玉米产酸能力,并分别用茉莉花、百合花、柠檬、金菊等进行调味,制成风味独特的营养保健茶醋饮料.结果表明,四种糯玉米中,陕鲜玉2号产醋酸度最高为5.48g/100mL,陕彩糯301酸度最低为4.12g/100mL,平均4.8g/100mL,依次为陕鲜玉2号、陕白糯1l号、陕黑糯1号、陕彩糯301.陕鲜玉2号产醋能力强,适于酿醋.     

Chemical fingerprints of Raki: a traditional distilled alcoholic beverage

Fourteen brands of commercial Raki samples were analysed chemically and compared with two samples produced in a local distillery, according to traditional methods, to determine whether the raw materials (grape or raisin) and distillation practices result in distinguishable chemical fingerprints in the final product. The samples were analysed with respect to the content of trans‐anethol, methyl alcohol, ethyl alcohol, higher alcohols and other volatiles, using gas chromatography. Principal component analysis showed that chemometric analysis could be used to distinguish between traditional and flavoured Raki products. Copyright © 2013 The Institute of Brewing & Distilling     

黑糯玉米红枣复合饮料工艺的响应面优化

研究黑糯玉米红枣复合保健饮料的生产工艺。应用Box-Behnken中心组合试验设计和响应面(RSM)分析法确定黑糯玉米红枣复合饮料的最佳配方。结果表明,其复合饮料最佳配方为黑糯玉米汁与红枣汁体积比2.2∶1,蔗糖8.2%,柠檬酸0.059%,稳定剂0.13%。     

紫薯玉米粒乳酸菌乳饮料生产工艺及其稳定性研究

以紫薯为原料制备酶解紫薯液,以鲜牛奶为原料制备发酵乳,往发酵乳中加入糖、稳定剂和螯合剂,搅拌混匀,按比例加入紫薯液进行调配,再进行灌装,灌装同时放入备用紫玉米粒,经杀菌,即得到紫薯玉米粒乳酸菌乳饮料产品。通过单因素及响应面实验,对复合稳定剂添加量、螯合剂添加量、均质压力和杀菌温度等影响因素进行了稳定性研究。结果表明,复合稳定剂(单甘酯:CMC:琼脂=10:9:3)加量为0.24%,螯合剂(三聚磷酸钠:六偏磷酸钠=2:3)加量为0.048%,均质压力为30MPa,杀菌温度为80℃。在此工艺条件下,饮料的沉淀率为1.68%,基本达到了稳定效果。      

鲜牛乳饮料酒的研究

以鲜牛乳为主要原料,蔗糖为辅料,利用酵母菌和乳酸菌混合协同发酵,制作鲜牛乳饮料酒。牛乳发酵饮料酒的最佳发酵工艺条件为：乳酸菌0．1‰、酵母菌1．2‰、白砂糖12％;乳酸菌和酵母菌协同发酵,发酵分两步进行,前发酵在30qE下发酵32h,后发酵在42℃下发酵6h。采用上述工艺条件发酵得到的牛乳饮料酒,外观澄清透明,香气饱满,风味纯正。