Effect of Mentha spicata L. and Mentha aquatica L. essential oils on the microbiological properties of fermented dairy product,kashk

The antibacterial activity of Mentha spicata and Mentha aquatica essential oils (EO) was tested against Staphylococcus aureus, Lactobacillus reuteri, Bifidobacterium animalis and Clostridium perfringens using agar well and disc diffusion techniques. Results showed that M. spicata EO had the highest inhibition activity against the studied microorganisms. Then, the antibacterial activity of both EO at 1500 and 2500 ppm was examined in industrial liquid kashk during the storage at 4 °C for 20 days. Both EO reduced the S. aureus viable count below 5 log CFU g^?1 after 4 days; however, the population of C. perfringens, L. reuteri and B. animalis decreased <1 log CFU g^?1 during the storage time. The least deteriorative effect on the lactic acid bacteria was related to M. aquatica. As revealed by organoleptic studies, kashk samples containing M. aquatica EO at 1500 and 2500 ppm were the most preferred samples.     

壳聚糖薄荷提取液复合保鲜剂对冰鲜海鱼的保鲜效果研究

采用壳聚糖薄荷提取液复合保鲜剂对冰鲜海鱼进行保鲜处理,通过观察海鱼的感官变化,测定海鱼的pH值和挥发性盐基氮含量等指标的变化,研究壳聚糖薄荷提取液复合保鲜剂对冰鲜海鱼的保鲜效果。试验结果表明,壳聚糖薄荷提取液复合保鲜剂能有效地控制pH和挥发性盐基氮（rITvB—N）的升高,使海鱼基本保持新鲜鱼具有的感官状态,并且随着薄荷提取液浓度的增加,保鲜效果略有增强,有效延长冰鲜海鱼的保质期。     

烟草味电子烟油中挥发性成分分析

采用二氯甲烷对3家公司的5种电子烟油样品进行萃取,并用气-质联用（GC-MS）法鉴定。通过对NIST 11谱库的检索,对5种样品中挥发性成分进行了比较分析。结果表明5种样品中的挥发性成分差别较大,共鉴定出40种挥发性成分,依据作用或来源分为雾化剂、烟叶提取物和薄荷提取物三类。其中相对含量水平较高且在5种样品中都检出的成分是丙二醇、烟碱和甘油。3家公司的5种烟草味电子烟油在抽吸品质上有所差异,C公司样品在抽吸感官感受上相较其他两家公司样品具有明显优势,其中样品C1又略好于C2。比较发现,C公司电子烟油的挥发性成分中含特有的8种多甘醇类化合物,可能是这些物质的协同作用而改善了抽吸品质。     

杂果薄荷型中草药牙膏用香精的研制

报道了杂果薄荷型中草药牙膏香精的研制,所得配方解决了单纯橙味香精、酯类水果香精对中草药味道掩盖力不强、亲合性差的问题,可为中草药牙膏香精的开发提供借鉴。     

造币企业生产管理信息系统的开发

在生产运作管理与管理信息系统的理论基础上，根据造币行业生产管理的特殊性，以深圳国宝制造厂为案例，围绕该企业生产管理工作展开了详细分析，提出造币企业信息化建设，应采用科学的系统开发和设计方法，开发一套造币企业的生产管理信息系统的设计构想，根据系统总体设计原则对系统的体系结构方案进行选择，对系统的功能结构进行设计，最后提出系统实施的解决方案。     

速溶性高浓薄荷风味膜状食品的研制

以MC为基础材料研制速溶性高浓薄荷风味膜状食品。结果表明,MC膜的速溶性与甘油用量呈线性相关;β-CD的包埋处理对薄荷风味有明显的稳定作用。     

响应面法优化薄荷、丁香和壳聚糖复配对鲜切苹果的保鲜效果

以薄荷、丁香为原材料进行有效物质的提取,通过单因素实验和响应面试验确定复配保鲜剂的最佳配比,并探究其对鲜切苹果的保鲜效果.结果显示薄荷提取物、丁香提取物、壳聚糖含量添加量分别为2％、3％、1.5％时对苹果腐烂病菌的抑制率达95.03％;在鲜切苹果贮藏2～10 d期间,最佳复配处理组与对照组相比可显著延迟苹果的腐烂速度,...     

薄荷提取物在控制苹果加工中V_C损失的应用

苹果中含有丰富的VC,但在果实加工制作过程中,常会导致VC的严重损失。薄荷是常见药食同源的植物资源,其提取物纯天然、无毒副作用,在水果加工过程中对VC具有一定的保护作用。研究薄荷提取物在苹果果实浸洗、打浆工序中控制VC损失的效应和作用机理,并与果品加工中常用的抗氧化剂草酸和EDTA进行比较,薄荷提取物的制备采用溶剂提取法,VC含量的测定采用分光光度法。结果表明,加入0.06%～0.08%的薄荷提取物能有效地控制苹果果实加工中VC的损失,使VC保存率提高到76.63%,且薄荷提取物无毒副作用,可成为一种天然的抗氧化剂和新型食品添加剂。     

枇杷花薄荷饮料的研制

以枇杷花、薄荷为原料,配以白砂糖、柠檬酸,制作清香爽口的健康饮料。通过正交试验确定其配方为枇杷花汁60%、薄荷汁4%、白砂糖9%、柠檬酸0.2%。     

Characteristics and upregulation of antioxidant enzymes of kitchen mint and oolong tea kombucha beverages

Kombucha is a healthy traditional beverage which is made by fermenting products with a symbiotic culture of acetic acid bacteria and yeasts. In present study, leaves of kitchen mint (Mentha cordifolia Opiz. Ex Fresen) and leaves of oolong tea (Camellia sinensis) were fermented in kombucha formula. After fermentation, titratable acidity contents and ethanol of kitchen mint, oolong tea, and mixtures of oolong tea and kitchen mint kombucha samples gradually increased with a period of fermentation time. At day 14 of fermentation, phenolic compounds and flavonoids were increased in all kombucha samples. The numbers of acetic acid bacteria and yeast in kombucha had gradually raised during 7–14 days of fermentation. DPPH and ABTS scavenging activities of these kombucha increased over a period of fermentation time and shown the highest antioxidant capacity on day 14 of fermentation. In addition, all kombucha samples exhibited the antioxidant effects by attenuating H₂O₂-induced ROS production, increasing mRNA expression of catalase, glutathione reductase (GRe), and Mn-SOD, and inducing GRe enzymatic activity in HEK-293 cells. Kombucha beverage can be used as the healthy beverages for attenuation of oxidative stress in many diseases.