Examinando por Autor "GUIDO STEFANO TRAUTMANN SÁEZ"
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- PublicaciónCOMPARISON OF MODERATE ELECTRIC FIELD AND CONVENTIONAL MARINATION METHODS APPLIED TO CHICKEN BREAST MUSCLES(JOURNAL OF FOOD PROCESS ENGINEERING, 2020)
;MARÍA ESTUARDO GUERRA VALLE ;GUIDO STEFANO TRAUTMANN SÁEZJORGE JOSÉ MORENO CUEVASTHIS RESEARCH AIMED TO COMPARE THE EFFECT OF THE BRINE-SALTING PROCESS WHEN APPLYING A MODERATE ELECTRIC FIELD (MEF) AND DURING CONVENTIONAL TREATMENT OF CHICKEN BREAST MUSCLES. CHICKEN BREASTS WERE CUT INTO CYLINDRICAL SHAPES, EITHER LONGITUDINALLY OR CROSS-SECTION ACCORDING TO MUSCLE FIBERS, WITH DIMENSIONS OF 2?×?3 CM2. SAMPLES WERE SUBMERGED IN MARINADE SOLUTIONS (SALT AND POLYPHOSPHATE-URN:X-WILEY:01458876:MEDIA:JFPE13455:JFPE13455-MATH-0001) AT CONCENTRATIONS OF 3, 5, AND 7% AT 4°C FOR 300?MIN OF PROCESSING. THE RESULTS SHOWED THAT THE MASS TRANSFER OF CHLORIDE AND POLYPHOSPHATE IONS WAS BEST WITH THE 5% MARINADE IN COMBINATION WITH AN MEF, OBTAINING 0.20 XCL + URN:X-WILEY:01458876:MEDIA:JFPE13455:JFPE13455-MATH-0002 BY THE END OF THE PROCESSING TIME; FOR THE CONVENTIONAL TREATMENT, THE 7% CONCENTRATION IMPROVED THE MASS TRANSFER OF IONS IN THE TREATED SAMPLES COMPARED TO THAT OF THE OTHER CONVENTIONALLY MARINATED SAMPLES. IN TERMS OF THE LONGITUDINAL CUT, THE 3% CONCENTRATION COMBINED WITH AN MEF PRESENTED BETTER RESULTS THAN THOSE OF THE SAME CONCENTRATION USING THE CONVENTIONAL METHOD. HOWEVER, THE 7% AND 5% CONCENTRATIONS USING CONVENTIONAL TREATMENT EXHIBITED MASS TRANSFER VALUES OF 0.17XCL + URN:X-WILEY:01458876:MEDIA:JFPE13455:JFPE13455-MATH-0003 AND 0.08XCL + URN:X-WILEY:01458876:MEDIA:JFPE13455:JFPE13455-MATH-0004, RESPECTIVELY, IN THE FINAL SAMPLES. - PublicaciónINFLUENCE OF IN VITRO DIGESTION ON ANTIOXIDANT ACTIVITY OF ENRICHED APPLE SNACKS WITH GRAPE JUICE(FOODS, 2020)
;MARÍA ESTUARDO GUERRA VALLE ;GUIDO STEFANO TRAUTMANN SÁEZ ;CONSTANZA DEL PILAR PAVEZ GUAJARDOJORGE JOSÉ MORENO CUEVASFRUITS ARE SOURCES OF BIOACTIVE COMPOUNDS (BACS), SUCH AS POLYPHENOLS. THIS RESEARCH AIMED TO STUDY THE IN VITRO BIOACCESSIBILITY OF POLYPHENOLS FROM ENRICHED APPLE SNACKS WITH GRAPE JUICE AND DETERMINE THEIR ANTIOXIDANT CAPACITY. IMPREGNATION (I) TREATMENTS WERE CARRIED OUT AT ATMOSPHERIC PRESSURE AND IN A VACUUM (IV) AT 30, 40, AND 50 °C AND THEIR COMBINATIONS WITH OHMIC HEATING (OH), I/OH, AND IV/OH. LATER, SAMPLES WERE DEHYDRATED BY FORCED CONVECTION AT 40, 50, AND 60 °C. ENRICHED SAMPLES WERE SUBJECTED TO IN VITRO DIGESTION. THE TOTAL POLYPHENOLS, MONOMERIC POLYPHENOLS, AND ANTIOXIDANT ACTIVITIES WERE DETERMINED FROM RECOVERED EXTRACTS. RESULTS SHOWED THAT TOTAL POLYPHENOLS PRESENT IN HIGHER CONCENTRATIONS IN THE GASTRIC PHASE, 271.85 ± 7.64 MG GAE/100 G D.M. MONOMERIC POLYPHENOLS BEHAVIOR DURING IN VITRO DIGESTION FOR THE VI/OH 50 °C AND DRIED TREATMENT (60 °C) WAS DESCENDING, MAINLY IN QUERCETIN, WHICH DECREASED BY 49.38% CONCERNING THE INITIAL CONCENTRATION, BEFORE DIGESTION. THE CYANIN, CATECHIN, EPICATECHIN, AND EPIGALLOCATECHIN DECREASED BY 26.66%, 20.71%, 23.38%, AND 21.73%, RESPECTIVELY. THEREFORE, BASED ON OBTAINED RESULTS, THE IV/OH 50 °C TREATMENT (DRIED 60 °C) IS THE BEST COMBINATION TO INCORPORATE POLYPHENOLS FROM GRAPE JUICE.