圣女果软糖最佳工艺参数组合的灰色分析

为了解决圣女果软糖生产中工艺参数的不稳定性。我们采用多目标灰色组合决策原理对圣女果软糖生产中溶液的不同的pH值、果胶量、加糖量进行了灰色分析。结果表明:以pH值2.7～3.1、果胶含量1.4%～1.6%、含糖量60%～65%。制成的成品质地好,色、香、味俱佳。     

基于响应面法黑树莓果汁微胶囊化工艺优化

以黑树莓果汁为芯材,海藻酸钠、壳聚糖为壁材,采用锐孔-凝固浴法对黑树莓果汁进行微胶囊化。运用Box-Behnken中心组合设计和响应面分析,对影响黑树莓果汁微胶囊化主要因素即壁材芯材配比、海藻酸钠质量分数、壳聚糖质量分数进行多项式回归模型建立和最优化。结果表明：在壁材海藻酸钠/芯材4.05、海藻酸钠质量分数2.27%、壳聚糖质量分数1.28%时,黑树莓果汁微胶囊的包埋效果最好,包埋率可达87.15%。     

树莓澄清果汁的加工工艺

研究了红树莓澄清果汁的加工工艺,酶解处理的酶用量,酶解温度,酶解时间的单因素试验以及酶用量,酶解时间和红树莓品种的正交优化试验表明,树莓果浆经酶解后,出汁率有较大提高,果汁澄清度也较好。最佳酶处理条件为加酶量3.5‰,酶处理温度45℃,时间4h;在所试验的3个品种中,维拉米综合指标最好,表现为出汁率高,可溶性固形物,总糖,VC含量均较高;树莓汁调配时一般不需加酸,只需补充糖即可达到较好的口感风味。     

黑树莓乳饮料的研制

以黑树莓果汁和牛乳为主要原料,采用L9(34)正交试验设计和单纯形重心设计分别对黑树莓乳饮料原料配比以及复合稳定剂配比进行优化研究。结果表明：黑树莓果汁8%、鲜牛乳35%、蔗糖6%时,产品风味最佳,感官评分为92分;CMC 0.129%、黄原胶0.037%、瓜尔豆胶0.084%时,产品稳定性最好,其沉淀率为2.77%。     

面包生产中主要工艺参数最佳组合的多目标灰色分析

针对面包生产中工艺参数的不稳定性,采用多目标灰色局势（组合）决策的原理对面包生产中不同酵母用量、烘烤温度、发酵方法试验的评价数据进行灰色分析,获得了一定生产环境厂主要工艺条件的最优组合参数。     

黑树莓果汁饮料与果酱的研制

研究了黑树莓果汁饮料与果酱的生产工艺,通过调节原果汁的酸度,解决了黑树莓口感过酸的问题,为黑树莓的加工利用提供了新的途径。     

黑树莓果汁饮料与果酱的研制

研究了黑树莓果汁饮料与果酱的生产工艺,通过调节原果汁的酸度,解决了黑树莓口感过酸的问题,为黑树莓的加工利用提供了新的途径。      

黑树莓总黄酮的醇提工艺优化及对黄嘌呤氧化酶的抑制作用

目的:确定黑树莓总黄酮提取的最佳工艺条件,并评价其对黄嘌呤氧化酶的抑制效果.方法:将黑树莓总黄酮的提取率作为试验考察要素,经单因素试验后,采用响应面分析法进行试验设计与优化;采用体外酶促反应动力学方法,探讨总黄酮对黄嘌呤氧化酶的抑制效果.结果:黑树莓总黄酮提取的最佳工艺条件:料液比1:11、提取时间5.6 h、乙醇体积...     

酶法提取树莓汁的研究

以澳洲红、早红、美国22三个品种树莓为原料,通过不同的酶处理方法来制取原果汁,优选适于制汁的品种和酶处理方法.     

红树莓果汁澄清剂的选择及澄清工艺的优化

以红树莓果汁为实验材料,选用壳聚糖、明胶、PVPP、果胶酶、皂土五种澄清剂对红树莓果汁进行单因素试验,以红树莓果汁的透光率为指标对比五种澄清剂的澄清效果;从中选择澄清效果较好的澄清剂,再通过正交优化试验筛选出红树莓果汁最佳的澄清工艺条件。结果表明,在单因素试验中,5种澄清剂对红树莓果汁都具有一定程度的澄清和脱色作用,壳聚糖和明胶的对红树莓果汁的澄清效果较好,PVPP和皂土次之,果胶酶的澄清效果不佳;通过正交优化试验和验证试验得出壳聚糖在质量浓度1.8 g/L、澄清温度40℃、澄清时间36 h的条件下澄清效果最佳,可以得到清澈透明且均一稳定,透光率达96.7%的红树莓果汁。该工艺可为红树莓资源的综合开发利用提供参考。     

Component analysis and sensory evaluation of Korean black raspberry (Rubus coreanus Mique) wines

Three types of Korean black raspberry wines were made from juice, juice‐pulp and juice‐pulp‐seed. Changes in the physicochemical properties and key compounds of the wines during fermentation were determined. The colour intensity was weakened with a 50% decrease in the anthocyanin content, but the colour intensity was strengthened by supplementation with pulp and seeds. Citric acid was the major organic acid (approximately 90%) of the wines, and the amino acid content was lowered to less than 10% by fermentation. The total volatile compound content was increased 5.3 times and nine new compounds were identified. The major components of the wines were isobutanol, n‐propanol and isoamyl acetate. The juice‐pulp‐seed wine contained the highest contents of anthocyanin, polyphenols and proanthocyanin. The anti‐oxidative activity of wines increased with an increasing content of polyphenols. The content of proanthocyanidin, a compound for pucker and bitter tastes, was approximately two to three times greater than in commercial grape wines. In a sensory test, the highest scores for colour, flavour, taste and overall acceptance were awarded to the juice‐pulp‐seed wine.     

Volatile aroma and sensory analysis of black raspberry wines fermented by different yeast strains

Robus coreanus Miquel is a small berry fruit used for Korean black raspberry (KBR) wine‐making. Twelve different yeast strains were investigated by laboratory‐scale fermentation to develop a wine with a high flavour quality. Volatile aroma compounds from the wines were analysed using headspace–solid phase microextraction–gas chromatography–mass spectrometry and sensory evaluation was performed to evaluate the flavour characteristics. The volatile aroma compounds that mostly contributed to the flavour of KBR wines were those related to fruity (esters) and floral (terpenes) aromas. Fifteen out of the 67 identified volatile compounds showed higher odour activity values than other compounds in the wines, and these compounds were considered as important contributors to the final aromas of the wine. Additionally, the KBR wine fermented by the M1 yeast strain had the highest sensory preference because of higher fruity and floral aroma characters compared with other wines. In addition to the M1 strain, the other yeast strains that produced favourable sensory characteristics included Enoferm CSM, Uvaferm VRB, Lalvin ICV GRE, Lalvin ICV Opale and LevureSeche Active. Of these strains, the M1 strain produced a particularly excellent black raspberry wine, and thus could be applied for further large‐scale production of black raspberry wines. It is also expected that this work will expedite research on the production of high‐quality black raspberry wines with beneficial physicochemical properties, functionality and good sensory characteristics. Copyright © 2015 The Institute of Brewing & Distilling     

果胶酶对树莓出汁率影响的研究

文中研究了果胶酶对树莓出汁率的影响.通过单因素试验和正交试验研究了果胶酶添加量、酶解温度和酶解时间对树莓出汁率的影响.结果表明,最佳的酶解条件为果胶酶添加最0.07％,温度45℃,时间3.5h.在此条件下树莓汁可保持原有有效成分.     

Antioxidant properties of Korean black raspberry wines and their apoptotic effects on cancer cells

BACKGROUND: The objective of the study was to determine the antioxidant activities of Korean black raspberry concentrate (KBR: Rubus coreanus Miq.) and Korean black raspberry wine concentrates (KBRW‐1 and KBRW‐2) using the DPPH (2,2‐diphenyl‐1‐picrylhydrazyl) radical scavenging assay. The apoptotic effects of the KBRW concentrates on various cancer cells were also investigated. RESULTS: Both the KBR concentrate and KBRW concentrates showed dose‐related antioxidant activities in the DPPH assay. At concentrations of 500 µg mL^?1 and 1000 µg mL^?1, the KBR concentrate antioxidant activities were 59% and 79%, respectively. KBRW‐1 and KBRW‐2 inhibited radical formation at 500 µg mL^?1 by 19% and 48%, respectively. The antioxidant activity of KBRW‐2 was comparable to various red wines (RW‐1, RW‐2, RW‐3, and RW‐4). However, at 1000 µg mL^?1, the antioxidant activities of KBRW‐1 and KBRW‐2 were 53% and 83% that of α‐tocopherol, respectively. Both RW‐1 and KBRW‐2 showed marked antiproliferative effects on all cancer cell types, with decreases in cell viability greater than 50%. This was co‐related with apoptotic characteristics, including chromatin condensation and apoptotic body formation, as determined by cell morphological assessment. Cell cycle analysis showed that treating AGS cells with RW‐1 and KBRW‐2 resulted in 25% and 30% apoptotic cell accumulation, respectively. KBRW‐2 induced the cleavage of poly(ADP‐ribose) polymerase (PARP) and the activation of caspase‐3 within the AGS cells. Levels of PARP cleavage were increased five‐ and three‐fold by RW‐1 and KBRW‐2, respectively, and the level of caspase‐3 was significantly increased by the treatment with KBRW‐2. CONCLUSION: Overall, the results of this study suggest that Korean black raspberry wine displays antioxidant activity comparable to that of imported red wines, and has anticancer effects that may be attributed to induction of the apoptotic pathway. Copyright © 2009 Society of Chemical Industry     

乳酸菌发酵红树莓山楂复合果汁品质分析

采用植物乳杆菌（Lactobacillus plantarum）、鼠李糖乳杆菌（Lactobacillus rhamnosus）、副干酪乳杆菌（Lactobacillus paracasei）三种乳酸菌按照1∶1∶1的比例复合发酵红树莓山楂复合果汁（1∶1）,分析其发酵前后部分理化指标的变化。结果显示,发酵后红树莓山楂复合发酵饮料中含有16种氨基酸;共检出40种挥发性风味物质,主要为酯类、酮类、酸类以及酚类化合物等;总酚含量为0.061 g/100 g、维生素C含量为89.56 mg/100 g;发酵后有机酸含量增至4.19 g/L,特别是乳酸含量由0.12 g/L增至3.22 g/L;活菌数达到2.2×107CFU/m L。感官分析结果显示,乳酸菌发酵能提升发酵原液的风味,保护色泽,红树莓山楂复合发酵饮料感官评分为86分,是一款营养、健康的乳酸发酵饮料。     

黑树莓酒自然发酵过程中微生物群落演替研究

以自然发酵的黑树莓酒为研究对象,利用高通量测序技术探究其自然发酵过程中的微生物群落组成、结构及演替变化规律。结果表明,在酒精发酵（AF）过程中,酵母属（Saccharomyces）、弯担菌属（Curvibasidium）和木拉克酵母属（Mrakia）相对丰度较高,酿酒酵母（Saccharomyces cerevisiae）在中期和后期相对丰度达75%以上。在苹果酸-乳酸发酵（MLF）过程中,泛菌属（Pantoea）、酒球菌属（Oenococcus）、乳球菌属（Lactococcus）、酸土单胞菌属（Aciditerrimonas）和地芽孢杆菌属（Geobacillus）占有较高的比例。酒球菌属增殖迅速,增长了近25%,在苹果酸-乳酸发酵过程中增幅最大。     

黑树莓泡制酒的泡制工艺条件优化及抗痛风功效评价

该研究以黑树莓为原料、荞麦原浆酒为酒基制备黑树莓泡制酒,通过单因素及响应面试验优化其泡制工艺条件,并采用小鼠高尿酸血症模型和急性痛风性关节肿胀模型评价黑树莓泡制酒的抗痛风功效。结果表明,黑树莓泡制酒的最佳制备工艺条件为：液料比1∶1(mL∶g)、泡制时间60 d、荞麦原浆酒酒精度49%vol。在此优化条件下,黑树莓泡制酒的黄嘌呤氧化酶（XOD）抑制率为42.68%,总黄酮含量为0.97 mg/mL;黑树莓泡制酒高剂量组能显著降低模型小鼠血清中尿酸含量、XOD活性及升高尿液中尿酸的含量（P<0.05）,血清中尿酸含量、XOD活性分别降低121.93μmol/L、13.93 U/L,尿液中尿酸含量升高131.78μmol/L,且急性痛风性关节肿胀度下降5.37%。黑树莓泡制酒具有明确的抗痛风功效,为产品开发提供了基础数据。     

聚丙烯纤维混凝土强度冻融损失率灰色关联分析

利用灰色系统理论的灰色关联分析,在文献数据基础上,对影响聚丙烯纤维混凝土强度冻融损失率的4个主要参数（水灰比、纤维含量、粉煤灰含量、减水剂含量）的关联度大小进行分析,并利用灰色预测模型建立关于聚丙烯纤维混凝土强度冻融损失率GM（1,N）方程．结果表明：对聚丙烯纤维混凝土强度冻融损失率影响因素关系为水灰比〉减水剂含量〉粉煤灰含量〉纤维含量,可利用灰色关联分析的方法有效预测聚丙烯纤维混凝土强度冻融损失率．灰色预测模型GM（1,5）的冻融损失率的预测结果有较好精度．