This study was conducted to investigate the proximate composition, meat color, Warner-Bratzler shear force (WBS), total collagen content (%), cooking loss (CL), fatty acid composition, amino acid composition, and mineral content of loin, strip loin, top round, and chuck tender Hanwoo beef and imported Australian beef. Protein content was significantly lower for strip loin and loin of Hanwoo QG 1 + and 1 beef when compared to that of Australian black Angus or cross beef (p < 0.05), whereas it was not significantly different for top round and chuck tender. Intramuscular fat content was higher for QG 1 + Hanwoo beef strip loin (15.48%) than that in Australian cross beef (8.83%) and it was also higher in loin for QG 1 + (17%) and 1 (15.52%) Hanwoo beef than that in Australian Angus beef (10.59%) and cross beef (9.21%) (p < 0.05). The CIE L* value was significantly higher for Australian cross beef strip loin than that of Hanwoo beef but the CIE a* value was not significantly different between the same cuts from different origins. However, CIE b* values were significantly higher for the Australian cross beef than those for four cuts of Hanwoo beef and Australian Angus beef (p < 0.05). No significant difference in WBS of loin, top round, or chuck tender was observed among the different beef sample origins except that strip loin had significant higher WBS for Australian cross beef (3.02 kg) but lower for Australian Angus beef (2.13 kg). Australian cross beef contained significantly higher palmitic acid, stearic acid, linolenic acid, but lower palmitoleic acid, oleic acid, eicosenoic acid content in strip loin, loin, and top round than those of QG 1 + and 1 Hanwoo beef (p < 0.05). QG 1 + Hanwoo beef had significant lower saturated fatty acid and higher monounsaturated fatty acid content than those in Australian cross beef (p < 0.05). Hanwoo 1 + beef had more glycine in top round and chuck tender, whereas Hanwoo QG 1 beef and Australian Angus beef had higher cysteine, methione, and glycine levels in strip loin and loin and valine and leucine in top round and chuck tender than the same cuts of Hanwoo 1 + beef (p < 0.05). No significant differences were observed for Ca, Fe, or Zn content among the different beef samples.
This study was conducted to investigate the proximate composition, meat color, Warner-Bratzler shear force (WBS), cooking loss (CL), fatty acids composition, amino acid composition and mineral contents of Hanwoo beef (QG 1 + , 1) and imported New Zealand black Angus beef with loin, strip loin, eye of round and chuck tender. The intramuscular fat contents were higher in the strip loin, loin and chuck tender of Hanwoo beef than New Zealand beef (p<0.05). Hanwoo QG 1 beef had higher Fe contents in the strip loin (30.52 mg/100g) and chuck tender (40.70 mg/100g) (p<0.05). Hanwoo beef had lower cooking loss and than those of New Zealand beef, whereas New Zealand beef had higher protein and amino acids contents (%) than their counterpart. There was no significant difference in the WBS between two origin samples except the chuck Hanwoo beef had significantly lower saturated fatty acids (SFA) and higher monounsaturated fatty acids contents than New Zealand beef (p<0.05). WBS values indicated that Hanwoo and New Zealand beef had similar tenderness in the loin, striploin and eye of round due to the longer aging periods of the New Zealand beef than Hanwoo beef during the distribution.
The study was performed to investigate microbial and physicochemical properties of domestic liquid eggs during cold storage. The liquid eggs used in the experiment were whole liquid, liquid egg yolks, and liquid egg whites. All samples were analyzed in summer and winter. The aerobic microorganisms were 1,270-83,300 CFU/g from non-sterilized liquid eggs produced in summer and their numbers increased from those produced in winter (ND, ~4,330 CFU/g). Total coliforms were not observed in non-sterilized whole liquid and non-sterilized liquid egg yolk regardless of season. Total coliforms from nonsterilized products were not detected in liquid egg whites during cold storage. Salmonella sp. was not observed in any of the liquid egg products. However, Pseudomonas sp., Pseudomonas geezennei, Pseudomonas otitidis, and Pseudomonas aeruginosa were identified by 16S rRNA from non-sterilized whole liquid eggs produced in summer. The pH and viscosity of whole liquid eggs and liquid egg whites were not different between the sterilized and non-sterilized treatments during cold storage. These results suggest that managing cross-contamination is necessary when non-sterilized liquid eggs are processed in summer.
:The aim of this study was to produce enzymatic hydrolysis of α-LA, β-LG and BSA with alcalase for the possible application of hypoallergenic foods toward cow's milk allergenic infant. The molecular weights of most of the peptides in hydrolysates from α-LA, β-LG and BSA by alcalase were below 3,000 dalton. Antigenesity of α-LA, β-LG and BSA hydrolysates to rabbit anti-α-LA antiserum, β-LG antiserum and BSA antiserum were remarkably decreased by more than 10 -3 at 20% inhibitionrate. Antigenesity of polyvalent antigenic peptide in α-LA, β-LG and BSA hydrolysates to specific rabbit anti-α-LA antiserum, β-LG antiserum and BSA antiserum was determined by PCS test using guina-pig.Hydrolysates of α-LA, β-LG and BSA with less than 3,000 dalton did not show polyvalent antigenic reaction against rabbit antiserum. Hydrolysates of α-LA, β-LG and BSA could be a source for the manufacturing of hypoallergenic food.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.