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Gagaoua M, Suman SP, Purslow PP, Lebret B. The color of fresh pork: Consumers expectations, underlying farm-to-fork factors, myoglobin chemistry and contribution of proteomics to decipher the biochemical mechanisms. Meat Sci 2023; 206:109340. [PMID: 37708621 DOI: 10.1016/j.meatsci.2023.109340] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 08/14/2023] [Accepted: 09/06/2023] [Indexed: 09/16/2023]
Abstract
The color of fresh pork is a crucial quality attribute that significantly influences consumer perception and purchase decisions. This review first explores consumer expectations and discrimination regarding pork color, as well as an overview of the underlying factors that, from farm-to-fork, contribute to its variation. Understanding the husbandry factors, peri- and post-mortem factors and consumer preferences is essential for the pork industry to meet market demands effectively. This review then delves into current knowledge of pork myoglobin chemistry, its modifications and pork discoloration. Pork myoglobin, which has certain peculiarities comparted to other meat species, plays a weak role in determining pork color, and a thorough understanding of the biochemical changes it undergoes is crucial to understand and improve color stability. Furthermore, the growing role of proteomics as a high-throughput approach and its application as a powerful research tool in meat research, mainly to decipher the biochemical mechanisms involved in pork color determination and identify protein biomarkers, are highlighted. Based on an integrative muscle biology approach, the available proteomics studies on pork color have enabled us to provide the first repertoire of pork color biomarkers, to shortlist and propose a list of proteins for evaluation, and to provide valuable insights into the interconnected biochemical processes implicated in pork color determination. By highlighting the contributions of proteomics in elucidating the biochemical mechanisms underlying pork color determination, the knowledge gained hold significant potential for the pork industry to effectively meet market demands, enhance product quality, and ensure consistent and appealing pork color.
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Affiliation(s)
| | - Surendranath P Suman
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY 40546, United States
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He ZG, Zhang Y, Yang MD, Zhang YQ, Cui YY, Du MY, Zhao D, Sun H. Effect of different sweeteners on the quality, fatty acid and volatile flavor compounds of braised pork. Front Nutr 2022; 9:961998. [PMID: 35990336 PMCID: PMC9387942 DOI: 10.3389/fnut.2022.961998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Accepted: 06/29/2022] [Indexed: 11/30/2022] Open
Abstract
This study aimed to assess how several sweeteners (white sugar, Siraitia grosvenorii fruit, mogrosides, and stevia glycoside) affected the flavor, fatty acid composition, and quality of braised pork. The findings indicated that braised meat prepared with sweeteners differed from typical braised pork. When simmered for 60 min, the typical braised pork with white granulated sugar exhibited a significant cooking loss (CL) and little water content. Significantly more than in the group containing Siraitia grosvenorii, mogroside, and stevia glycoside, the Thiobarbituric acid (TBARS) value increased by 14.39% (P < 0.05). The sample in the group that included mogroside had a low CL rate. After 40 min of stewing, the lean pork has the highest L* value, but the 60-min stew sample is nicely colored and stretchy. Mogroside can prevent protein, and lipid oxidation, is thermally stable and reduces CL during stewing. Additionally, Siraitia grosvenorii and stevia glycosides help prevent oxidation from intensifying during stewing. When Siraitia grosvenorii is added, lipid oxidation is significantly inhibited, and stevia glycosides are more beneficial for enhancing meat color. With an increase in heating time, the fatty acids in braised pork reduced; the unsaturated fatty acid (UFA) of the Siraitia grosvenorii fruit (SF) and mg group also fell somewhat, and the UFA: SFA ratio was higher than that of the white sugar (WS) group. The SFA content of the braised meat in the stevia glycoside group was higher than that of the WS group. In all, 75 volatile flavor elements in braised pork were discovered by Gas chromatography-ion mobility spectrometry (GC-IMS). The sweetener increased alcohols, esters, and acids in the braised pork. As stewing time increased, ketones decreased, but aldehydes and esters increased. The pork formed antioxidant peptides with great nutritional value after cooking. Braised pork with mogroside and stevia glycoside additions primarily have some protein color protection and antioxidant effects. This study may offer fresh perspectives on applying natural sweeteners and enhancing braised pork’s flavor.
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Affiliation(s)
- Zhi-Gui He
- School of Leisure and Health, Guilin Tourism University, Guilin, China
| | - Ying Zhang
- School of Tourism and Cuisine, Harbin University of Commerce, Harbin, China
| | - Ming-Duo Yang
- School of Tourism and Cuisine, Harbin University of Commerce, Harbin, China
| | - Yu-Qing Zhang
- School of Leisure and Health, Guilin Tourism University, Guilin, China
| | - Ying-Ying Cui
- School of Leisure and Health, Guilin Tourism University, Guilin, China
| | - Mi-Ying Du
- School of Leisure and Health, Guilin Tourism University, Guilin, China
| | - Dong Zhao
- School of Leisure and Health, Guilin Tourism University, Guilin, China
| | - Hui Sun
- School of Leisure and Health, Guilin Tourism University, Guilin, China
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Price HE, Barkley KE, Lerner AB, Harsh BN, Woodworth JC, Tokach MD, Dritz SS, Goodband RD, DeRouchey JM, O'Quinn TG, Allerson MW, Fields B, King DA, Wheeler TL, Shackelford SD, Boler DD, Dilger AC. Differences in carcass chilling rate underlie differences in sensory traits of pork chops from pigs with heavier carcass weights. J Anim Sci 2022; 100:6612615. [PMID: 35727741 DOI: 10.1093/jas/skac206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 06/01/2022] [Indexed: 11/12/2022] Open
Abstract
Pork hot carcass weights (HCW) have been increasing 0.6 kg per year, and if they continue to increase at this rate, are projected to reach an average weight of 118 kg by the year 2050. This projection in weight is a concern for pork packers and processors given the challenges in product quality from heavier carcasses of broiler chickens. However, previous work demonstrated that pork chops from heavier carcasses were more tender than those from lighter carcasses. Therefore, the objective was to determine the effects of pork hot carcass weights, ranging from 90 to 145 kg with an average of 119 kg, on slice shear force and sensory traits of Longissimus dorsi chops when cooked to 63°C or 71°C, and to assess if differences in chilling rate can explain differences in sensory traits. Carcasses were categorized retrospectively into fast, medium, or slow chilling-rates based on their chilling rate during the first 17 h postmortem. Loin chops cut from 95 boneless loins were cooked to either 63°C or 71°C and evaluated for slice shear force and trained sensory panel traits (tenderness, juiciness, and flavor) using two different research laboratories. Slopes of regression lines and coefficients of determination between HCW and sensory traits were calculated using the REG procedure in SAS and considered different from 0 at P ≤ 0.05. As hot carcass weight increased, chops became more tender as evidenced by a decrease in SSF (63°C ß = -0.0412, P = 0.01; 71°C ß = -0.1005, P < 0.001). Further, HCW explained 25% (R 2 = 0.2536) of the variation in chilling rate during the first 5 h of chilling and 32% (R 2 = 0.3205) of the variation in chilling rate from 5 h to 13 h postmortem. Slow and medium-rate chilling carcasses were approximately 12 kg heavier (P < 0.05) than fast chilling carcasses. Slice shear force of chops cooked to 63° and 71°C was reduced in slow and medium chilling compared with fast chilling carcasses. Carcass temperature at 5 h postmortem explained the greatest portion of variation (R 2 = 0.071) in slice shear force of chops cooked to 63°C. These results suggest that carcasses tend to chill slower as weight increases, which resulted in slight improvements in sensory traits of boneless pork chops regardless of final degree of doneness cooking temperature.
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Affiliation(s)
- Hannah E Price
- Department of Animal Sciences, University of Illinois, Urbana-Champaign, IL, USA
| | - Kayla E Barkley
- Department of Animal Sciences, University of Illinois, Urbana-Champaign, IL, USA
| | - Annie B Lerner
- Department of Animal Sciences and Industry, Kansas State University, Manhattan, KS, USA
| | - Bailey N Harsh
- Department of Animal Sciences, University of Illinois, Urbana-Champaign, IL, USA
| | - Jason C Woodworth
- Department of Animal Sciences and Industry, Kansas State University, Manhattan, KS, USA
| | - Mike D Tokach
- Department of Animal Sciences and Industry, Kansas State University, Manhattan, KS, USA
| | - Steve S Dritz
- Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS, USA
| | - Robert D Goodband
- Department of Animal Sciences and Industry, Kansas State University, Manhattan, KS, USA
| | - Joel M DeRouchey
- Department of Animal Sciences and Industry, Kansas State University, Manhattan, KS, USA
| | - Travis G O'Quinn
- Department of Animal Sciences and Industry, Kansas State University, Manhattan, KS, USA
| | | | | | - David A King
- USDA, ARS, U.S. Meat Animal Research Center, Clay Center, NE, USA
| | - Tommy L Wheeler
- USDA, ARS, U.S. Meat Animal Research Center, Clay Center, NE, USA
| | | | - Dustin D Boler
- Department of Animal Sciences, University of Illinois, Urbana-Champaign, IL, USA
| | - Anna C Dilger
- Department of Animal Sciences, University of Illinois, Urbana-Champaign, IL, USA
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