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In order to explore the bacterial community composition of mung bean sour pulp, the core element of Luoyang traditional and special pulp noodles, the bacteria 16S rDNA of mung bean sour pulp from six pulp workshops in Lu-oyang was sequenced using Illumina MiSeq high-throughput sequencing technology. The results showed that 8 bacterial phyla were identified from 6 samples of mung bean sour pulp, involving 75 genera and 106 species; and Firmicutes is the dominant phylum (78.57%-97.17%), Lactobacillus (20.95%-90.36%) and Lactococcus (3.26%-62.68%) are the dominant genus, Lactobacillus oligofermentans, unclassified_Lactococcus are the corresponding dominant species, while Lactobacillus plantarum, Lactobacillus curvatus and Lactobacillus manihotivorans are common sub dominant bacteria. These dominant bacteria are all lactic acid bacteria, which have extensive prebiotic effects. The functional prediction of the bacterial community in mung bean sour pulp showed that the carbohydrate metabolism and amino acid metabolism abundance of the bacterial community are high, especially the abundance of flavor amino acid metabolic pathway and L-lactate dehydrogenase are relatively high. It was inferred that the unique acid and flavor of mung bean sour pulp was related to the bacterial amino acid metabolism and lactic acid synthesis. The results of this study provided a theoretical basis for further study on the fermentation mechanism of mung bean sour pulp and development of corresponding starter. [ABSTRACT FROM AUTHOR]

A bionic device for the ankle,which has shaft non-perpendicular is designed in according to the structure characteristics of human physiological ankle. The device is consist of three degrees of freedoms that the rotating joint of lower leg,ankle joint and subtalar joint. To reduce the quality of ankle,the motors driving the ankle and the subtalar joint are installed on the thigh and transmission through cables,which cross the knee,fixed on the sheave to limit the rotation angle of each joint. The D-H coordinate method is used in coordinate system selection. Through simulation,the motion attitude space of the mechanism is analyzed and calculated,and compared with the related attitude parameters of human foot. It shows that this mechanism can achieve motion features that similar to human physiological ankle joint. This mechanism can be used in the field of humanoid robot,and can also be a reference for the research of the movement characteristic of the human ankle joint.