基于机器学习的凋亡蛋白的亚细胞位点预测

准确预测凋亡蛋白的亚细胞位点有利于理解细胞死亡的机理和其生物学功能。本文利用裂解位点的蛋白质序列信息提出了一种新的凋亡蛋白的预测算法PSSP.对三个凋亡蛋白数据集进行Jackknife验证表明我们的方法得到了令人满意的结果。     

可食性小麦蛋白膜的研究

本文介绍了小麦蛋白及其成膜特性,总结了国内外可食性蛋白膜的研究现状,提出了可食性小麦蛋白膜的研究方案,并对膜的安全性及其应用作了展望。     

电商平台中药养生零食研究

大健康战略实施下,大健康产业发展迅猛,互联网+和电子商务热为中药养生零食带来了爆发增长的新机遇。然而目前学界对这类典型的灵感、工艺、食材、配伍、功能脱胎于中医食疗文化的食养功能化休闲食品,尚无统一的命名,也无相关概念的研究文献。文章通过梳理相关联概念,明确厘定了中药养生零食的概念,在此基础上进一步探讨了中药养生零食的内涵、外延及特征,并从传承历史经典和体现当下需求两个角度对其进行审视,以期填补学界对于中药养生零食研究的空白,为中药养生零食产业的后续升级改革提供理论依据。     

The Role of Plant-Based Foods in Canadian Diets: A Survey Examining Food Choices,Motivations and Dietary Identity

Used as a replacement for animal-based protein sources, the market for foods containing plant-based proteins (PBPs) continues to grow across North America. As of now, however, few studies of consumer behaviour focus specifically on the dynamics of this development in Canada and so this study looks at how PBPs fit in the current dietary choices of Canadians. Using data collected through a geographically representative nation-wide survey, the analysis shows that past and current consumption of these products are good indicators of future consumption of PBPs. Relatedly, negative stigma attached to earlier versions of PBPs, sometimes referred to as ‘fake meat’, continues to be an issue with current Canadian consumers. The analysis also demonstrates that personal health and animal/environmental ethics play a significant role in individual decisions to eat PBPs instead of meat. Additionally, issues of availability, affordability and concern over the sensory qualities continue to present barriers to future use.     

Human food vs. animal feed debate. A thorough analysis of environmental footprints

Currently, a large portion of grain production is funneled into animal feed despite widespread hunger and undernutrition. In the present work we: (i) estimated the area, water and carbon footprints of animal-source proteins (AP) obtained from intensive farming systems and compared them with those from producing an equivalent amount of plant-source proteins (PP); (ii) postulated a set of straightforward hypotheses to recover environmental resources by cutting down a surplus in the per capita protein intake from three representative regions where intensive animal farming systems account for a great share of animal food production.Our major findings revealed that AP from intensive farming were approximately 2.4 to 33 more expensive in terms of area and water demand and 2.4 to 240 more pollutant in terms of greenhouse gas emissions when compared with PP. Environmental recoveries varied widely according to the hypothesized scenarios, but even the lowest estimates suggested remarkable results.Whether additional proteins supply would be required, crops with large protein content as peas, chickpeas, soybeans, and lupins could help to meet food security, while better compromise between dietary habits and environmental protection could be reached in rich countries by a moderate consumption of meat produced with non-feed grain systems.     

On the merits of plant-based proteins for global food security: Marrying macro and micro perspectives

This paper aims to demonstrate the importance of protein production for the global environment and to give insight into the way consumers frame the protein part of their meal. Using a macro perspective, it presents a review of the literature on current and future impacts of the nutritional transition that has made animals the chief source of protein in many countries. Protein-related environmental pressure is put into the perspective of a number of vital Earth-system processes whose boundaries have already been overstepped or are under threat of transgression. To inform policy-makers about these linkages a long-term global food security frame is proposed. Using a micro perspective, survey data on consumers reveal that their frames and habits are strongly adapted to the current meat system. Although this system has induced some pickiness about meat as well as uneasiness about meat's animal origin, there is a large psychological distance between consumers and experts in their view of protein sources. It is suggested that a global food security frame may help to bridge this distance by creating overlapping frames, capturing both altruistic aspects and a reasonable measure of self-interest. This may enable a novel protein transition, featuring a greater share of plant-based protein.