Values, properties and utility of different parts of Moringa oleifera: An overview / 中草药·英文版

Moringa oleifera is one of the most widespread species belonging to family Moringaceae. Almost each part of this tree has enormous properties in nutrition, medicine, or other industrial purposes. This review mainly introduces nutritional ingredients, bioactive compounds, applications, and potentials of this tree, including leaves, seeds, pods, flowers, root barks, and gum, in order to bring convenience to industries and researchers all over the world focusing on each part of this amazing plant. Moreover, the review also analyzes the current application situation of M. oleifera in China. After summarizing the recent researches of M. oleifera, we conclude that most current researches focus on the leaves and seeds of this plant, and the most concerned property of M. oleifera is the antioxidant ability. However, the molecular mechanisms under its multiple properties need further studies.

Evaluation of the ability to metabolize 1, 2-propanediol by heterofermentative bacteria of the genus Lactobacillus

Background: New directions of research on lactic acid bacteria include investigation of metabolic pathways for the synthesis and/or metabolism of 1,2-propanediol, commonly used in the food and chemical industry, medicine, pharmacy and cosmetology as well as agriculture. The objective of this study was to compare the capacity of strains representing three diverse heterofermentative species belonging to the genus Lactobacillus to synthesize and/or transform 1,2-PD as well as to suggest new directions of research aimed at commercial use of this metabolite. Results: The novel strain of Lactobacillus buchneri A KKP 2047p, characterized as exhibiting an unusual trait for that species in the form of capacity to metabolize 1,2-PD, grew poorly in a medium containing 1,2-PD as a sole carbon source. The supplementation with glucose facilitated rapid growth of bacteria and use of 1,2-PD for the synthesis of propionic acid. A similar observation was noted for Lactobacillus reuteri. On the other hand, Lactobacillus diolivorans effectively metabolized 1,2-PD which was the sole carbon source in the medium, and the addition of glucose inhibited the synthesis of propionic acid. The experiments also investigated the effect of cobalamin as a diol dehydratase coenzyme involved in the propionic acid synthesis from 1,2-PD whose addition promoted the yield of the reaction in the case of all tested strains. Conclusions: All tested isolates showed the ability to effectively metabolize 1,2-PD (in the presence of cobalamin) and its conversion to propionic acid, which reveals that investigated bacteria meet the essential requirements of microorganisms with a potential application.

Research advances and outlook on the brain-computer interface / 医疗卫生装备

Experimental methods and some key techniques of brain-computer interface(BCI)are introduced in this paper.The further discussion is mainly focused on the research of practical BCIs.