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福建农业职业技术学院现代农业工程学院食品生物技术专业介绍
福建农业职业技术学院 现代农业工程学院 食品 生物技术
2023/3/22
福建农业职业技术学院现代农业工程学院食品生物技术专业介绍。
高压脉冲电场对酿酒酵母发酵能力的影响
高压脉冲电场 酿酒酵母 活性 发酵
2020/3/20
为探究高压脉冲电场(PEF)在酒精发酵工业上的实际应用,本研究以酿酒酵母为试验材料,在设定脉宽、频率、作用时间等参数不变的条件下,以电场强度为唯一变量,分别采用电场强度为1、6 kV·cm-1的PEF对酵母进行预处理。通过检测发酵底液中酵母生长量、葡萄糖消耗量和乙醇产出量的变化,探究PEF对酿酒酵母发酵能力的影响。结果表明,经12 h发酵后,在电场强度为1 kV·cm-1的PEF刺激作用下,酿酒酵...
针对豆腐干软罐头恒温热杀菌工艺中存在的因杀菌过度而品质不佳问题，开展了杀菌工艺优化。首先利用CFD软件数值模拟杀菌过程获取节点温度历史，筛选出杀菌值＞3 min且蒸煮值能够有效减小的梯度升温方法，再利用试验对该方法进行验证，通过比较实际杀菌过程的杀菌值、蒸煮值及具体品质指标，同时，结合工业生产的需要，最终确定一种升温模式作为优化杀菌工艺。研究最终得到一种即能满足安全指标且品质劣化程度显著降低的豆腐...
葡萄果实与葡萄酒的颜色由其所含花色苷的种类和含量决定，而花色苷是由花色素经过糖基化修饰转变而成，所以糖基化修饰在葡萄果实花色苷合成途径中起着重要作用。葡萄果实中的糖基化花色苷主要包括花色素的3–O–葡萄糖基和3,5–O–双葡萄糖基，即花色素单糖苷和花色素双糖苷，糖基化花色苷的组成是决定红葡萄酒品质的关键因素之一。对糖基化花色苷在葡萄果实中的组成及其对葡萄酒颜色和稳定性的影响进行了简要介绍，重点对花...
D-氨基酸诱导的酿酒酵母细胞内活性氧的累积
D-氨基酸 酿酒酵母 活性氧 过氧化氢
2019/4/18
D-氨基酸在食品中广泛存在。研究D-氨基酸诱导的酿酒酵母细胞内的活性氧的累积及其生物损伤。实验结果显示D-氨基酸抑制细胞生长，引起细胞内H2O2含量的升高，导致细胞内过氧化氢酶和过氧化物酶的活性增强。该结果表明H2O2是D-氨基酸诱导产生的活性氧的主要类型，氧化损伤是D-氨基酸对酿酒细胞毒性的主要机制。
Wines with Increased Lignan Content by the Addition of Lignan Extracts
enrichment of white and red wines 7-hydroxymatairesinol alpha-conidendrin antioxidant activity total polyphenol content sensory evaluation
2016/12/9
Red and white wines [Grüner Veltliner white wine and Blue Limberger (Blaufränkisch) red wine (vintage 2013)] were enriched with lignan hydroxymatairesinol originated from spruce knots. These spru...
Change of selected antioxidant parameters of red wines during maturation
aging anthocyanins Cabernet Sauvignon polyphenols Vitis vinifera L.
2016/12/9
The effects of red wine maturation on the contents of selected parameters of bioactive compounds in wine were determined. Samples of Alibernet, Cabernet Sauvignon, and Torysa wines were studied by spe...
This study was carried out to increase the shelf life of bread by using different additives at ambient temperature. The Wheat flour used was also chemically analyzed and results depicted 12.1% moistur...
双水相法提取葡萄皮渣中花色苷
葡萄皮渣 花色苷 双水相 提取
2016/12/21
以酿酒葡萄皮渣为原料,研究并优化双水相法对花色苷得率的影响。在单因素的基础上,通过PlackettBurman实验筛选出p H、乙醇质量分数、硫酸铵质量分数、料液比为主要自变量,以花色苷得率为响应值,利用BoxBenhnken中心组合设计原理和响应面分析法,研究各自变量的交互作用对花色苷得率的影响,模拟得到二次多项式回归方程的模型。响应面优化后的最佳工艺参数是乙醇质量分数为28%,硫酸铵质量分数为...
Inhibitory effects of fresh hops on Helicobacter pylori strains
hops homogenate H. Pylori antimicrobial effect
2015/7/28
The goal of this work was to provide evidence for the inhibitory effects of fresh hops on the growth of Helicobacter pylori. Fresh hops were homogenised after harvest and the homogenate was treated us...
Effects of wort clarifying by using carrageenan on diatomaceous earth dosage for beer filtration
fermentation wort boiling beer production haze
2015/7/28
Diatomaceous earth makes a great contribution to the amount of brewing waste. In this work, attempts were made to reduce the dosage of diatomaceous earth used during beer filtration, via the applicati...
Saccharomyces cerevisiae and kefir production using waste pomegranate juice, molasses, and whey
baker’s yeast lactic acid bacteria cheese whey growth agricultural wastes fruit
2015/5/18
The growth of Saccharomyces cerevisiae (baker’s yeast) and kefir was studied in substrates containing pomegranate juice, molasses, and cheese whey, at various conditions such as fermentation temperatu...
以豆粕和玉米蛋白粉为原料,应用枯草芽孢杆菌液态发酵制备大豆玉米复合肽。首先考察豆粕和玉米蛋白粉配比、发酵温度、摇床转速、发酵时间和接种量对复配蛋白的水解度和肽转化率的影响。在此基础上应用四因素三水平响应面实验设计对液态发酵工艺进行优化,并建立了相应的回归模型。结果表明,豆粕和玉米蛋白粉配比为2∶1时,液态发酵的优化工艺参数为:发酵温度为37℃、摇床转速为184 r/min、发酵时间为51 h、接种...
以魔芋飞粉发酵所产多肽为原料,采用超滤法将其分离为M200 ku、10 kuM200 ku和M10 ku三个不同分子量区段的多肽;采用Sephadex G-100凝胶层析对10 kuM200 ku分子量区段多肽进一步进行分离,得到N1、N2和N3三个组分。通过对洗脱条件优化,确定了Sephadex G-100凝胶层析的最佳分离条件为:上样浓度150 mg/m L,洗脱流速0.8 m L/min;经...
Development of innovative health beneficial bread using a fermented fibre-glucan product
wheat-oat bread β-glucan fibre fermentation
2015/3/30
The impact of partial substitution of fine wholemeal oat flour by fermented oat sourdough in wheat-oat bread formula on the basic bread constituents and organoleptic properties, and to assess wheat-oa...