The Experts below are selected from a list of 45 Experts worldwide ranked by ideXlab platform
Zhe Chi - One of the best experts on this subject based on the ideXlab platform.
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high pullulan biosynthesis from high concentration of glucose by a hyperosmotic resistant yeast like fungal strain isolated from a natural Comb Honey
Food Chemistry, 2019Co-Authors: Sijia Xue, Lu Chen, Hong Jiang, Guanglei Liu, Zhenming Chi, Zhe ChiAbstract:Abstract A novel, yeast-like fungal strain, Aureobasidium melanogenum TN3-1, that was isolated from natural Honey can actively transform 140.0 g/L of glucose into 110.29 ± 2.17 g/L of pullulan during fermentation, whereas A. melanogenum P16 and TN1-2 converted 140.0 g/L of glucose into only 45.81 ± 1.7 g/L and 48.7 ± 2.6 g/L of pullulan, respectively. It was noted that most of the cells in the culture of the strain TN3-1 were arthroconidia, while all of the yeast-like fungal cells of A. melanogenum P16 cultivated under the same conditions were blastoconidia. The cell sizes, cell walls and the number of small vacuoles of A. melanogenum TN3-1 were also much larger, thicker and higher, respectively, than those of A. melanogenum P16. The glycerol, trehalose and glycogen content in the A. melanogenum TN3-1 cells was higher than that of the A. melanogenum P16 and TN1-2 cells.
Brian D. Eitzer - One of the best experts on this subject based on the ideXlab platform.
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Overwintered brood Comb Honey: colony exposure to pesticide residues
Journal of Apicultural Research, 2014Co-Authors: Nancy Ostiguy, Brian D. EitzerAbstract:To address beekeeper concerns about pesticide residues in overwintered Honey, paired samples were obtained from the extracted supers and the brood chamber of the same colony. Only eight residues we...
Sijia Xue - One of the best experts on this subject based on the ideXlab platform.
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high pullulan biosynthesis from high concentration of glucose by a hyperosmotic resistant yeast like fungal strain isolated from a natural Comb Honey
Food Chemistry, 2019Co-Authors: Sijia Xue, Lu Chen, Hong Jiang, Guanglei Liu, Zhenming Chi, Zhe ChiAbstract:Abstract A novel, yeast-like fungal strain, Aureobasidium melanogenum TN3-1, that was isolated from natural Honey can actively transform 140.0 g/L of glucose into 110.29 ± 2.17 g/L of pullulan during fermentation, whereas A. melanogenum P16 and TN1-2 converted 140.0 g/L of glucose into only 45.81 ± 1.7 g/L and 48.7 ± 2.6 g/L of pullulan, respectively. It was noted that most of the cells in the culture of the strain TN3-1 were arthroconidia, while all of the yeast-like fungal cells of A. melanogenum P16 cultivated under the same conditions were blastoconidia. The cell sizes, cell walls and the number of small vacuoles of A. melanogenum TN3-1 were also much larger, thicker and higher, respectively, than those of A. melanogenum P16. The glycerol, trehalose and glycogen content in the A. melanogenum TN3-1 cells was higher than that of the A. melanogenum P16 and TN1-2 cells.
Nancy Ostiguy - One of the best experts on this subject based on the ideXlab platform.
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Overwintered brood Comb Honey: colony exposure to pesticide residues
Journal of Apicultural Research, 2014Co-Authors: Nancy Ostiguy, Brian D. EitzerAbstract:To address beekeeper concerns about pesticide residues in overwintered Honey, paired samples were obtained from the extracted supers and the brood chamber of the same colony. Only eight residues we...
Nancy A. Moran - One of the best experts on this subject based on the ideXlab platform.
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Routes of Acquisition of the Gut Microbiota of the Honey Bee Apis mellifera.
Applied and environmental microbiology, 2014Co-Authors: J. Elijah Powell, Vincent G. Martinson, Katherine R. Urban-mead, Nancy A. MoranAbstract:ABSTRACT Studies of newly emerged Apis mellifera worker bees have demonstrated that their guts are colonized by a consistent core microbiota within several days of eclosure. We conducted experiments aimed at illuminating the transmission routes and spatiotemporal colonization dynamics of this microbiota. Experimental groups of newly emerged workers were maintained in cup cages and exposed to different potential transmission sources. Colonization patterns were evaluated using quantitative real-time PCR (qPCR) to assess community sizes and using deep sequencing of 16S rRNA gene amplicons to assess community composition. In addition, we monitored the establishment of the ileum and rectum communities within workers sampled over time from natural hive conditions. The study verified that workers initially lack gut bacteria and gain large characteristic communities in the ileum and rectum within 4 to 6 days within hives. Typical communities, resembling those of workers within hives, were established in the presence of nurse workers or nurse worker fecal material, and atypical communities of noncore or highly skewed compositions were established when workers were exposed only to oral trophallaxis or hive components (Comb, Honey, bee bread). The core species of Gram-negative bacteria, Snodgrassella alvi, Gilliamella apicola, and Frischella perrara, were dependent on the presence of nurses or hindgut material, whereas some Gram-positive species were more often transferred through exposure to hive components. These results indicate aspects of the colony life cycle and behavior that are key to the propagation of the characteristic Honey bee gut microbiota.