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- 저자 : R. Acevedo (검색결과 2 건)
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Pregelatinized starches enriched in slowly digestible and resistant fractions
Agama-Acevedo, Edith,Bello-Perez, Luis A.,Lim, Jongbin,Lee, Byung-Hoo,Hamaker, Bruce R. Elsevier 2018 LWT- Food science and technology Vol.97 No.-
<P><B>Abstract</B></P> <P>Consumption of slowly digestible and resistant starches (SDS and RS) is known to modulate postprandial glucose levels and attain extended glucose release. In this study, pregelatinized high-amylose maize starches (50 and 70 g amylose 100 g<SUP>−1</SUP> starch) were subjected to hydrothermal treatments [40 g water 100 g<SUP>−1</SUP>, heat-moisture treated (HMT) at 100 °C and low temperature-moisture treated (LMT) at 4 °C] to increase total amount of SDS and RS. Hydrothermal treatment of pregelatinized high-amylose starches produced higher amounts of SDS (27.0 and 26.4% for HMT and LMT amylomaize V, and 21.5 and 21.6% for HMT and LMT amylomaize VII) and RS (36.2 and 31.5 g/100 g, and 47.5 and 37.5 g/100 g, respectively), than pregelatinized normal or waxy starches (SDS - 2.3 and 3.2 g/100 g, and 13.7 and 15.8 g/100 g, respectively; and RS 10.2 and 7.8 g/100 g, and 12.4 and 11.0 g/100 g, respectively). Granule morphology was retained in pregelatinized high-amylose starches, apparently due to their restricted swelling. Starch debranching profiles showed a minor increase in DP 25-36 in SDS and RS, suggesting that higher intermediate fractions of the high-amylose starches may create an overall material effect resulting in slower digestion of hydrothermal treated starches. High SDS and RS in pregelatinized starches could be applied in cold-formed food products.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Treated pregel high-amylose starches have slowly digestible and resistant fractions. </LI> <LI> Starch fine structure contributes to slowly digestible starch formation. </LI> <LI> Treated pregelatinized starches could have use in cold-formed processed foods. </LI> </UL> </P>
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S. Shanavas,A. Priyadharsan,E.I. Gkanas,R. Acevedo,P.M. Anbarasan 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.72 No.-
The photoexcited charge carriers trapping was an effective way to generate a large number of activespecies like O2 and OH radicals to oxidize pharmaceutical molecules. In ternary Cu/Bi2Ti2O7/rGOcomposite Cu nanoparticles and rGO sheets act as charge carrier trappers and the suppression of e -h+pair recombination was confirmed by Photoluminescence analysis. The Cu/Bi2Ti2O7/rGO compositeexhibited higher photocatalytic degradation efficiency for degradation of ibuprofen and tetracyclinemolecules under visible light irradiation within 90 min. Therefore, this research designates a promisingstrategy for higher photoexcited charge carrier trapping photocatalyst design for efficient degradation ofpharmaceutical molecules.
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