Can artisanal “Coalho” cheese from Northeastern Brazil be used as a functional food?

AbstractBrazilian artisanal “Coalho” cheeses from six Northeast towns were investigated as a functional food based on their peptide profiles and antioxidant, zinc-binding and antimicrobial activities. The peptides (WSP) from “Coalho” cheese showed high antioxidant activity, the best value of TEAC being 2223±10.10μM, which means 91.1±0.43% oxidative inhibition and peptide concentration for IC50 of 7mg/mL (21μg of peptides) for sample from the town of Correntes. The smallest TEAC value (1896±17μM), which means 75.9±0.7% oxidative inhibition and IC50 of 10.5mg/mL (31.5μg of peptide), was obtained for samples from the town of São Bento do Una. The zinc-binding activities were: Arcoverde (72.21±0.24%) Cachoeirinha (75.02±0.02%), Capoeiras (61.78±0.65%), Correntes (75.47±0.5%), São Bento do Una (75.41±0.15%), and Venturosa (74.36±0.04%). The WSP extracts showed antimicrobial activity against Enterococcus faecalis, Bacillus subtilis, Escherichia coli and Pseudomonas aeruginosa. All the results obtained suggest that “Coalho” cheese has potential as a functional food

Structure, Glass Stability and Crystallization Activation Energy of SrO-CaO-B2O3-SiO2 glasses doped with TiO2

[EN] By the first time the correlation between glass stability (GS), activation energy for crystallization (E) and structural data was investigated for some TiOdoped CaO-SrO-BO-SiO glasses obtained from the same batch. B NMR spectra demonstrated that the boron changes from tetragonal to trigonal configuration for TiO contents higher than 4 mol%, while the Si NMR spectra showed the absence of Q species, in addition to an increase in Q at the expense of Q units. Both observations are consistent with Ti acting as a network modifier. It was demonstrated that all these glasses crystallize mainly from the surface, and the crystal growth changes with the TiO content. Most of the GS parameters increase with the TiO content, while E decreases for larger TiO contents. This dramatic reduction in E is strongly correlated to the change in the role of Ti cation in the glass matrix.The authors are indebted to the Maranh ̃o Foundation for Scientific Research and Development (FAPEMA), Processes # 2014/01469, #2014/00260 and # 2015/00773. MVSA and GVPB also thank the cholarships of the Federal Agency for the Support and Improvement of Higher Education (CAPES). JFS acknowledges financial support from FAPESP (grant CEPID 2013/07793-6) and CNPq (grant 311520/2018-9). We are grateful to Benjamin J.A. Moulton for his valuable suggestions.Peer reviewe