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In the present study, the authors synthesised copper nanoparticles (CuNPs) by using extract of Zingiber officinale (ginger) and later the NPs were bioconjugated with nisin, which shows antimicrobial activity against food spoilage microorganisms. CuNPs and its bioconjugate were characterised by ultraviolet–vis spectroscopy, NP tracking analysis, Zetasizer, transmission electron microscopy analysis,...
A new acidic polysaccharide with water-solubility from Prunella Vulgaris Linn was extracted by water, isolated and purified by sequential treatment such as alcohol precipitation, macropole adsorbent resins, and DEAE-Sepharose Fast Flow anion-exchange column chromatography. The weight-average molecular weight of acidic polysaccharide was 57234 Da. The results of FTIR, UV spectra and elemental analysis...
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