4 results match your criteria: "Chulalongkorn University Pathumwan Bangkok 10330 Thailand.[Affiliation]"

Bio-guided isolation was applied to Vietnamese L. to find alpha-glucosidase inhibition. Fifteen compounds were isolated and structurally determined, including two new compounds, marchatoside (7) and marchanol (8), along with thirteen known compounds: marchantin A (1), isoriccardin C (2), riccardin C (3), marchantin K (4), lunularin (5), 3-(3,4-dimethoxybenzyl)-5,7-dimethoxyphthalide (6), vitexilactone (9), 12-oleanene-3-one (10), 3,11-dioxoursolic acid (11), ursolic acid (12), artemetin (13), kaempferol (14), and quercetin (15).

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In the present study, the n-SnO/p-CuFeO (p-CFO) complex was prepared by a two-step process. p-CFO synthesized by the molten salt method was coated with SnO synthesized by a facile chemical precipitation method. The formation of n-SnO/p-CFO was confirmed by powder X-ray diffraction (PXRD).

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The potential of bifunctional nanocatalysts obtained from waste palm kernel shell (PKS) was investigated for one-step transesterification-esterification under mild conditions. State-of-the-art characterization illustrated that the synthesized catalyst has high stability through the thermal test, high BET surface area of 438.08 m g, pore volume of 0.

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Article Synopsis
  • Fructooligosaccharides (FOSs) are prebiotics useful in various industries, and inulosucrase can be engineered to synthesize different FOS chain lengths from sucrose.
  • Three engineered variants of inulosucrase (R483F, R483Y, R483W) showed improved binding to a specific substrate, leading to higher production of shorter chain FOSs (GF5) compared to the wild type.
  • Even though the engineered variants displayed reduced overall catalytic activity, they could still achieve FOS synthesis yields of up to 73% from the substrate, confirming the effectiveness of the modifications.
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