Search Results

You are looking at 1 - 2 of 2 items for :

  • Author or Editor: L. Castro x
  • Materials and Applied Sciences x
  • Refine by Access: All Content x
Clear All Modify Search

Pleurotus djamor from Yucatan State, Mexico was compared with a local variety of P. ostreatus , in terms of chemical composition and amino acid profile. No differences were found (P=0.55) in crude protein content of P. djamor and P. ostreatus (20.2±0.15 vs. 20.3±0.16 g/100 g DM., respectively). P. ostreatus had a lower fiber and fat content (P<0.05). No difference was found in ash content (P>0.05). P. ostreatus has a higher proportion (P<0.05) of valine, isoleucine, phenylalanine, aspartate and alanine while P. djamor had higher proportion (P<0.05) of proline and glutamate, no difference was found in the remaining amino acids. Both species had a high proportion of aspartate and glutamate. In general, the human amino acid requirements for adults are satisfied, however, leucine and lysine might become limiting. It was concluded that P. djamor can be included in human diet in similar fashion as P. ostreatus .

Restricted access

Bisphenol A (BPA), bisphenol A dimethacrylate (BisDMA) and phthalic acid (PA) endocrine disruptors can migrate from the plastic lining of cans to foods producing serious health problems when they exceed allowable concentration limits for consumption. In this work, a method was assessed for the determination of BPA, BisDMA, and PA in vegetable food cans from Mexico using a food simulant. Those disruptors were determined by HPLC connected to an Evaporative Light Scattering Detector (ELSD), and simultaneous detection by UV-Vis detector was used for validation. The most frequently found disruptor in major concentration was PA over the range of 5.40 to 112.39 μg l−1. The samples analysed did not exceed the migration limit accepted by the US-FDA and US-EPA for bisphenols. Our results showed that HPLC-ELSD produces chromatograms with accurate signals and smaller detection limits than the UV-Vis detector for the substances analysed here.

Restricted access