湿热处理对玉米淀粉理化性质及消化性的影响

在不同的水分含量下对普通玉米淀粉进行了湿热处理,研究了湿热处理对玉米淀粉颗粒形貌、黏度、热力学性质、结晶性和消化性的影响.结果表明:湿热处理玉米淀粉的颗粒外形仍保持完整,但颗粒表面出现破损,偏光十字仍存在,高水分含量下处理时部分偏光十字消失;经湿热处理后,淀粉起糊温度提高,峰值黏度、终止黏度和崩解值下降,淀粉糊化过程吸热焓变减小;结晶度随湿热处理水分含量先增加后减小,在高水分含量下处理的淀粉中出现A+V型结晶峰,表明形成了淀粉脂质复合物;抗性和慢消化淀粉含量随湿热处理水分含量的提高而增加.     

霞多丽葡萄自然发酵醪中酿酒酵母的分离及其酿造特性分析

以烟台地区霞多丽葡萄自然发酵醪为材料,筛选鉴定本土酿酒酵母并测定其发酵力和耐受性,选育优良酵母用于霞多丽干白和赤霞珠干红葡萄酒的酿造。用孟加拉红培养基筛选酵母菌,经WL显色鉴别培养基和5.8S ITS序列鉴定获得12株酿酒酵母。通过测定受试菌株发酵后残糖量、酒精度及耐受能力(酒精度、SO₂、酸、高糖),选育4株酵母用于酿造霞多丽干白葡萄酒,测定发酵参数指标和主要挥发物含量,并结合感官评定确定酵母YXF2、YXF5和YXF10适宜酿造干白葡萄酒。菌株YXF5和YXF10酿造生产的干红葡萄酒香气特征明显,不同于商品酵母,具备酿造地域特色葡萄酒的潜力。     

基于模糊聚类模型的葡萄酒分类

应用模糊聚类分析的思想和方法,综合考虑酿酒葡萄的各项理化指标,建立了葡萄酒分类的数学模型。一方面,通过对理化指标的相关性分析进行属性约简,刻画了理化指标之间的内在联系;另一方面,在属性约简的基础上对每个属性进行加权,经实验验证两方面均可以优化模糊聚类分析模型对葡萄酒质量的分类效果。     

滇南坝子葡萄酒中的历史真实与文化再生产

历史其实并非是一种绝对的客观与真实,它总是会依据具体情景,融合人们的主观意图、偏好、想象、期待、愿望、信仰等而成为一种构建性真实,从而向人们展现出历史中客观性与构建性两种真实之间的密切联系。文章以云南省弥勒县南乡坝葡萄酒历史的文化生产过程为例,以滇越铁路作为超时空串联这些事件的线路媒介,以此来观察历史真实与文化再生产之间的密切联系。     

保健酒包装工艺和车间设计

本文阐述了保健酒包装工艺,根据生产工艺流程对车间主设备进行选择,并对生产车间进行布置。     

基于扫描探针显微镜的几种洋酒AFM扫描图

在扫描探针显微镜的AFM扫描图中,国产白酒所含呈香呈味微量物质形成了聚集的颗粒状微观形态。为了观察洋酒微观形态,文章采用扫描探针显微镜对伏特加,白兰地,威士忌和配制酒做了扫描,得到这四种酒的AFM扫描图。从图中观察到了这四种酒的微观形态。     

玉米抗旱性评价指标的系统分析

对可用于玉米抗旱性评价的指标进行了系统研究,并借引了灰色关联度分析法进行了评价指标的筛选。研究结果表明:对于一个玉米品种进行抗旱性鉴定,不仅需进行多指标的重复测定,且需综合评定各生育时期的抗旱性。因而提出种子萌发胁迫指数、干旱后幼苗存活率、抗旱系数三位一体的初级鉴定指标,同时结合光合速率、ABA含量、NRase活性等次级鉴定指标的玉米抗旱性鉴定指标体系。表1,参28。     

Analysis of the Protein Electrophoresis Patterns of Curvularia Lunata in Maize and Immunological Detection of the Pathogenic Culture

Twelve isolates of Curvularia lunata and six related species from maize or other host plants are examined for the analysis of polyacrylamide gel electrophoresis (SDS-PAGE) patterns of their soluble proteins,Differences exist significantly among different species and the same species.There is a special protein band for Curvularia at relative mobility value 0.177(Rf 0.177) and a special protein band for C.lunata at Rf 0.225,Two kinds of rpimary antibodies to C.lunata are used to indirect ELISA and Avidin-Biotion-peroxidase Complex(ABC) immunoassay to evaluate their detecting sensitivity and specificity,The sensitivity of ABC immuno- assay is higher than indirect ELISA.APAbs to C.lunata is special to C.lunata.     

Genetic variation in the New World: Ancient teeth,bone, and tissue as sources of DNA

Examination of ancient and contemporary Native American mtDNA variation via diagnostic restriction sites and the 9-pb Region V deletion suggests a single wave of migration into the New World. This is in contrast to data from Torroni et al.³⁴ which suggested two waves of migration into the New World (the NaDene and Amerind). All four founding lineage types are present in populations in North, Central, and South America suggesting that all four lineages came over together and spead throughout the New World. Ancient Native American DNA shows that all four lineages were present before European contact in North America, and at least two were present in South America. The presence of all four lineages in the NaDene and the Amerinds argues against separate migrations founding these two groups, although admixture between the groups is still a viable explanation for the presence of all four types in the NaDene.