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Xie A, Zhang Y, Wu H, Chen M. Monitoring the Aging and Edible Safety of Pork in Postmortem Storage Based on HSI and Wavelet Transform. Foods 2024; 13:1903. [PMID: 38928844 PMCID: PMC11202915 DOI: 10.3390/foods13121903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2024] [Revised: 06/12/2024] [Accepted: 06/13/2024] [Indexed: 06/28/2024] Open
Abstract
The process of meat postmortem aging is a complex one, in which improved tenderness and aroma coincide with negative effects such as water loss and microbial growth. Determining the optimal postmortem storage time for meat is crucial but also challenging. A new visual monitoring technique based on hyperspectral imaging (HSI) has been proposed to monitor pork aging progress. M. longissimus thoracis from 15 pigs were stored at 4 °C for 12 days while quality indexes and HSI spectra were measured daily. Based on changes in physical and chemical indicators, 100 out of the 180 pieces of meat were selected and classified into rigor mortis, aged, and spoilt meat. Discrete wavelet transform (DWT) technology was used to improve the accuracy of classification. DWT separated approximate and detailed signals from the spectrum, resulting in a significant increase in classification speed and precision. The support vector machine (SVM) model with 70 band spectra achieved remarkable classification accuracy of 97.06%. The study findings revealed that the aging and microbial spoilage process started at the edges of the meat, with varying rates from one pig to another. Using HSI and visualization techniques, it was possible to evaluate and portray the postmortem aging progress and edible safety of pork during storage. This technology has the potential to aid the meat industry in making informed decisions on the optimal storage and cooking times that would preserve the quality of the meat and ensure its safety for consumption.
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Affiliation(s)
- Anguo Xie
- Zhang Zhongjing School of Chinese Medicine, Nanyang Institute of Technology, Nanyang 473000, China; (H.W.); (M.C.)
| | - Yu Zhang
- School of Intelligent Manufacturing, Nanyang Institute of Technology, Nanyang 473000, China;
| | - Han Wu
- Zhang Zhongjing School of Chinese Medicine, Nanyang Institute of Technology, Nanyang 473000, China; (H.W.); (M.C.)
| | - Meng Chen
- Zhang Zhongjing School of Chinese Medicine, Nanyang Institute of Technology, Nanyang 473000, China; (H.W.); (M.C.)
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2
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Zhao Y, Wang Z, Bruce HL, Roy BC, Yang W, Zhang D, Hou C. The effect of modified atmosphere packaging at an early postmortem stage on lamb meat quality during subsequent aging. J Food Sci 2024; 89:228-244. [PMID: 38126109 DOI: 10.1111/1750-3841.16881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 10/11/2023] [Accepted: 11/27/2023] [Indexed: 12/23/2023]
Abstract
This study explores the influence of modified atmosphere packaging (MAP) on fresh lamb meat quality with respect to gas concentration, rigor state, and post-mortem aging time. A comparison was done for the quality characteristics of lamb Longissimus thoracis lumborum chops that had been packaged separately in air, 75%O2 + 25%CO2 MAP or 50%O2 + 50%CO2 MAP at 1, 6, and 24 h post-mortem and then stored for 6, 12, 24, 72, and 144 h post-mortem, and the quality of lamb chops had been evaluated at each post-mortem period separately. Chops packaged at 1 and 6 h post-mortem in MAP had reduced pH decline, less purge loss, and enhanced redness at early post-mortem storage times. Lamb color stability was evidently greater in 75%O2 + 25%CO2 MAP than in 50%O2 + 50%CO2 MAP during the early storage period when a* and R630/R580 were taken into account. Shear force values were lowest in lambs packaged at 1 h post-mortem with 75%O2 + 25%CO2 MAP at 12 h post-mortem and then increased until 72 h post-mortem, suggesting that rigor has been delayed by such a high O2 MAP. Thus, fresh lamb quality was maintained most effectively when packaged at 1 h post-mortem in 75%O2 + 25%CO2 MAP for consumption at 12 h post-mortem. The exact mechanisms and optimization of MAP based on Chinese retail conditions should be considered in future studies. PRACTICAL APPLICATION: In this study, three slaughter patterns in the meat industry involving boning immediately after dressing (hot-boning) and chilling for a short period (warm-boning) or overnight (cold-boning) are considered, as well as the behavior of non-immediate consumption after purchase. Modified atmosphere packaging provides an effective preservation of early post-mortem muscles with enhanced color stability, water holding capacity, and texture during refrigerated storage. This could provide new insights into how to process lamb muscles in the early post-mortem period to improve and stabilize lamb quality.
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Affiliation(s)
- Yingxin Zhao
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Beijing, P. R. China
| | - Zhenyu Wang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Beijing, P. R. China
| | - Heather L Bruce
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Bimol C Roy
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Wei Yang
- Sunrise Material Co., Ltd, Jiangsu, P. R. China
| | - Dequan Zhang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Beijing, P. R. China
| | - Chengli Hou
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Beijing, P. R. China
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Christofaro Fernandes A, Beline M, Polizel GHG, Cavalcante Cracco R, Ferreira Dias EF, Furlan É, da Luz e Silva S, de Almeida Santana MH. Fetal Programming and Its Effects on Meat Quality of Nellore Bulls. Vet Sci 2023; 10:672. [PMID: 38133223 PMCID: PMC10748345 DOI: 10.3390/vetsci10120672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 11/11/2023] [Accepted: 11/20/2023] [Indexed: 12/23/2023] Open
Abstract
This work aimed to evaluate the effects of prenatal nutritional stimulation at different pregnancy stages on carcass traits and meat quality in bovine progeny. For this purpose, 63 Nellore bulls, born from cows submitted to three nutritional plans, were used: not programmed (NP), which did not receive protein supplementation; partially programmed (PP), which had protein-energy supplementation (0.3% of mean body weight of each batch) only in the final third of pregnancy; and full programming (FP), which received supplementation (0.3% of mean body weight of each batch) throughout pregnancy. The averages of parameters were submitted to the ANOVA, and the supplementation periods, which were different when p value < 0.05, were compared. Carcass weights and rib eye area (REA) did not differ between treatments (p > 0.05), but subcutaneous fat thickness (SFT) showed a tendency (p = 0.08) between groups. For lipids and marbling, no differences were found (p > 0.05). In the analyses of maturation time and shelf life, no difference was observed between treatments. However, there was a tendency between treatments at 14 days of maturation time for cooking loss (CL) (p = 0.08). Treatments did not affect shear force in the progenies (p > 0.05). Fetal programming had no effect on the meat quality of Nellore bulls.
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Affiliation(s)
- Arícia Christofaro Fernandes
- Department of Animal Science, College of Animal Science and Food Engineering—USP, Av. Duque de Caxias Norte, 225, Pirassununga 13635-900, SP, Brazil; (M.B.); (G.H.G.P.); (É.F.)
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Zhao Y, Chen L, Bruce HL, Wang Z, Roy BC, Li X, Zhang D, Yang W, Hou C. The Influence of Vacuum Packaging of Hot-Boned Lamb at Early
Postmortem Time on Meat Quality during Postmortem Chilled
Storage. Food Sci Anim Resour 2022; 42:816-832. [PMID: 36133632 PMCID: PMC9478973 DOI: 10.5851/kosfa.2022.e34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 07/06/2022] [Accepted: 07/06/2022] [Indexed: 11/30/2022] Open
Abstract
To evaluate the effects of early postmortem vacuum packaging (VP) on meat quality
during postmortem chilled storage, hot-boned lamb was vacuum-packaged at 1, 6,
12, 24, and 48 h postmortem and stored around 2°C until 168 h postmortem,
with lamb packaged in plastic wrap as the control (aerobic packaging).
Intramuscular pH decline was delayed when lamb was vacuum packaged at 1, 6, and
12 h postmortem (p<0.05). The lamb vacuum-packaged at 1 h postmortem
(VP-1h group) had significantly lower shear force values and purge losses
accompanied by lower free thiol group values than other treatments during
postmortem storage and was also higher in extractable calpain-1 activity by 6 h
postmortem (p<0.05). Free thiol group concentrations were significantly
higher after VP at 6 and 12 h postmortem (p<0.05). Packaging lamb under
vacuum very early postmortem produced the lowest shear force and purge loss,
likely by slowing heat loss and muscle temperature decline, implying that lamb
quality is improved by VP when applied very early postmortem. This was at the
expense of protein oxidation, which was unrelated to other meat quality
measurements, most likely because potential contracture during hot boning
confounded its impact. Further research is required to understand the
implications of the interaction between protein oxidation, VP, and hot boning on
the acceptability of lamb.
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Affiliation(s)
- Yingxin Zhao
- Institute of Food Science and Technology,
Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products
Quality and Safety Control in Storage and Transport Process, Ministry of
Agriculture and Rural Affairs, Beijing 100193, China
| | - Li Chen
- Institute of Food Science and Technology,
Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products
Quality and Safety Control in Storage and Transport Process, Ministry of
Agriculture and Rural Affairs, Beijing 100193, China
| | - Heather L. Bruce
- Department of Agricultural, Food and
Nutritional Science, University of Alberta, Edmonton, AB T6G
2P5, Canada
| | - Zhenyu Wang
- Institute of Food Science and Technology,
Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products
Quality and Safety Control in Storage and Transport Process, Ministry of
Agriculture and Rural Affairs, Beijing 100193, China
| | - Bimol C. Roy
- Department of Agricultural, Food and
Nutritional Science, University of Alberta, Edmonton, AB T6G
2P5, Canada
| | - Xin Li
- Institute of Food Science and Technology,
Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products
Quality and Safety Control in Storage and Transport Process, Ministry of
Agriculture and Rural Affairs, Beijing 100193, China
| | - Dequan Zhang
- Institute of Food Science and Technology,
Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products
Quality and Safety Control in Storage and Transport Process, Ministry of
Agriculture and Rural Affairs, Beijing 100193, China
| | - Wei Yang
- Sunrise Material Co., Ltd.,
Jiangyin 214411, China
| | - Chengli Hou
- Institute of Food Science and Technology,
Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products
Quality and Safety Control in Storage and Transport Process, Ministry of
Agriculture and Rural Affairs, Beijing 100193, China
- Corresponding author: Chengli
Hou, Institute of Food Science and Technology, Chinese Academy of Agricultural
Sciences, Key Laboratory of Agro-Products Quality and Safety Control in Storage
and Transport Process, Ministry of Agriculture and Rural Affairs, Beijing
100193, China, Tel: +86-10-62819392, Fax: +86-10-62819392, E-mail:
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5
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Smili H, Boudida Y, Becila S, Babelhadj B, Idder M, Chehma A, Adamou A, Boudjellal A, Sentandreu MA, Ouali A. Early postmortem degradation of actin muscle protein in Algerian Sahraoui dromedaries. FOOD SCI TECHNOL INT 2022:10820132221097879. [PMID: 35473401 DOI: 10.1177/10820132221097879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The present study aimed to evaluate actin degradation during the early postmortem time in Longissimus Lumborum muscle according to Sahraoui dromedary's age. A sample of eight males, young (2 years old) and adult (8 years old) dromedaries, was used to investigate meat quality traits and actin proteolysis during the conversion of muscle to meat. Results demonstrated higher pH values in young compared to adult with a polyphasic pH drop profile. While, age did not affect drip loss (DL) and the values at 72 h postmortem varied from 5 to 9%. Western blot revealed that actin proteolysis occurred since 1 h postmortem and that it was affected by age and postmortem time. In particular, the 32 and 25 kDa actin fragments could be potential markers of ongoing meat tenderization.
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Affiliation(s)
- Hanane Smili
- Equipe Maquav, Laboratoire Bioqual, Institut de la Nutrition, de l'Alimentation et des Technologies Agro-Alimentaires (INATAA), 567246Université Frères Mentouri Constantine 1, Constantine, Algérie.,Laboratoire des Bioressources Sahariennes: préservation et valorisation, 257251Université Kasdi Merbah Ouargla, Ouargla, Algérie
| | - Yasmine Boudida
- Equipe Maquav, Laboratoire Bioqual, Institut de la Nutrition, de l'Alimentation et des Technologies Agro-Alimentaires (INATAA), 567246Université Frères Mentouri Constantine 1, Constantine, Algérie
| | - Samira Becila
- Equipe Maquav, Laboratoire Bioqual, Institut de la Nutrition, de l'Alimentation et des Technologies Agro-Alimentaires (INATAA), 567246Université Frères Mentouri Constantine 1, Constantine, Algérie
| | - Baaissa Babelhadj
- Laboratoire de protection des écosystèmes en zones arides et semi-arides, 257251Université Kasdi Merbah Ouargla, Ouargla, Algérie.,Ecole normale supérieure de Ouargla, Ouargla, Algérie
| | - Messaouda Idder
- Laboratoire des Bioressources Sahariennes: préservation et valorisation, 257251Université Kasdi Merbah Ouargla, Ouargla, Algérie
| | - Abdelmajid Chehma
- Laboratoire des Bioressources Sahariennes: préservation et valorisation, 257251Université Kasdi Merbah Ouargla, Ouargla, Algérie
| | - Abdelkader Adamou
- Laboratoire de protection des écosystèmes en zones arides et semi-arides, 257251Université Kasdi Merbah Ouargla, Ouargla, Algérie
| | - Abdelghani Boudjellal
- Equipe Maquav, Laboratoire Bioqual, Institut de la Nutrition, de l'Alimentation et des Technologies Agro-Alimentaires (INATAA), 567246Université Frères Mentouri Constantine 1, Constantine, Algérie
| | | | - Ahmed Ouali
- UR370, QuaPA, 481410INRA de Clermont Ferrand Theix, st. Genes Champanelle, France
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6
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Álvarez C, Koolman L, Whelan M, Moloney A. Effect of Pre-Slaughter Practises and Early Post-Mortem Interventions on Sheep Meat Tenderness and Its Impact on Microbial Status. Foods 2022; 11:foods11020181. [PMID: 35053913 PMCID: PMC8775201 DOI: 10.3390/foods11020181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 12/15/2021] [Accepted: 12/20/2021] [Indexed: 01/14/2023] Open
Abstract
Tenderness, together with flavour, is the main quality trait that defines consumer acceptance of sheep meat. The factors affecting tenderness can be grouped as those influenced before slaughter, in the early post-mortem intervention and, finally, during the aging period. These factors have been extensively studied with respect to tenderness, but the impact of early post-mortem interventions and subsequent aging on the microbial quality of the final products has not been broadly reviewed to date. In this review, the authors summarize the most recent knowledge on lamb meat tenderness management and how such practices may impact the final meat quality, especially its microbial status. The impacts of pre-slaughter factors (age, sex, diet, genotype and transport) and post-mortem interventions (chilling regime, electrical stimulation, or hanging method), are described and comprehensively discussed.
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Affiliation(s)
- Carlos Álvarez
- Teagasc Food Research Centre, Department of Food Quality and Sensory Science, D15 DY05 Dublin, Ireland
- Correspondence:
| | - Leonard Koolman
- Teagasc Food Research Centre, Department of Food Safety, D15 DY05 Dublin, Ireland;
- UCD-Centre of Food Safety, School of Public Health, Physiotherapy & Sports Science, University College Dublin, D04 V1W8 Dublin, Ireland
| | - Michael Whelan
- Teagasc Food Research Centre, Meat Technology Ireland, D15 KN3K Dublin, Ireland;
| | - Aidan Moloney
- Teagasc, Animal & Grassland Research and Innovation Centre, Grange, Dunsany, C15 PW93 Meath, Ireland;
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7
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Ge Y, Zhang D, Zhang H, Li X, Fang F, Liang C, Wang Z. Effect of Postmortem Phases on Lamb Meat Quality: A Physicochemical, Microstructural and Water Mobility Approach. Food Sci Anim Resour 2021; 41:802-815. [PMID: 34632400 PMCID: PMC8460324 DOI: 10.5851/kosfa.2021.e37] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 07/06/2021] [Accepted: 07/26/2021] [Indexed: 11/06/2022] Open
Abstract
To investigate the effect of postmortem phases on lamb meat quality, the physicochemical quality, microstructure and water mobility of oyster cut, short loin, knuckle and silverside muscles from Small-Tail Han sheep were evaluated in the pre-rigor, rigor mortis and post-rigor phases. Pre-rigor lamb meat had higher pH and water holding capacity (WHC), whereas lower CIE L*, b*, hue angle values than rigor mortis and post-rigor meat (p<0.05). The Warner-Bratzler shear force (WBSF) values were higher in rigor mortis short loin and silverside than their pre-rigor and post-rigor counterparts, pre-rigor short loin had lower WBSF value than its post-rigor counterpart (p<0.05). Muscle fibers shrank laterally and longitudinally during the onset of rigor mortis. Rigor mortis and post-rigor lamb meat exhibited wide I-bands, dark A-bands, short sarcomeres and large inter-myofibrillar spaces. The shift of immobilized water to free water and repulsion from the intra-myofibrillar space to the extracellular space result in the increase of water loss in rigor mortis and post-rigor lamb meat. The results of the principal component analysis (PCA) indicated that rigor mortis and post-rigor lamb meat had similar quality properties but different from pre-rigor lamb meat. In conclusion, the lamb meat in the pre-rigor phase had good tenderness, color and WHC. The results of this research could provide some theoretical references for lamb meat production and processing.
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Affiliation(s)
- Yue Ge
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
| | - Dequan Zhang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
| | - Huimin Zhang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
| | - Xin Li
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
| | - Fei Fang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
| | - Ce Liang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
| | - Zhenyu Wang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
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8
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Mushi DE. Feedlot performance of Tanzanian Shorthorn Zebu finished on local feed resources. Trop Anim Health Prod 2020; 52:3207-3216. [PMID: 32638154 DOI: 10.1007/s11250-020-02346-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 07/02/2020] [Indexed: 11/24/2022]
Abstract
A study was conducted in Hanang District to assess potential for on-farm feedlot finishing of Tanzanian Shorthorn Zebu (TSHZ) in dry season using locally available feed resources. A total of 65 (2-3 years old, 150-250 kg LWT) steers were randomly distributed into two dietary treatments in three villages. The steers were finished either in feedlots using compounded diets or under free grazing in accordance with farmers' practice. Following 90 days of feeding, all steers were slaughtered for detailed carcass and meat quality assessment. Growth performance, carcass and meat quality of experimental animals were assessed to determine feedlot performance of TSHZ. Results show that average daily gain of feedlot-finished animals (620 g/day) was nearly three-fold higher (P = 0.042) than that of grazed steers (223 g/day). Feedlot-finished steers produced 28 kg (P = 0.001) heavier carcasses than grazed ones. Carcasses from feedlot-finished steers cooled slowly as they had higher (P = 0.001) temperatures than that of grazed ones at 45 min (33.1 vs. 30.5 °C) and 6 h (21.0 vs. 19.5 °C) post-mortem. Feedlot-finished steers produced beef with higher (P = 0.003) marbling scores (3.4) than grazed ones (2.4). As a result, beef from the feedlot-finished steers was more tender (P = 0.016) than that from grazed ones, and it required 13 N less force to shear. It is concluded that TSHZ responds positively to improved feeding with significant enhancement on carcass gain and meat quality. Use of diets compounded using agro-processing by-products, instead of whole grain, can lower the cost of finishing TSHZ steers significantly.
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Affiliation(s)
- D E Mushi
- Department of Animal, aquaculture and Range Sciences, Sokoine University of Agriculture, Morogoro, Tanzania.
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Holman BW, Alvarenga TI, Hopkins DL. The effect of fibre orientation, measurement interval and muscle on lamb meat drip loss values. Meat Sci 2020; 161:107959. [DOI: 10.1016/j.meatsci.2019.107959] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 08/30/2019] [Accepted: 09/27/2019] [Indexed: 11/16/2022]
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10
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Webb EC, Agbeniga B. Timing and duration of low voltage electrical stimulation on selected meat quality characteristics of light and heavy cattle carcasses. ANIMAL PRODUCTION SCIENCE 2020. [DOI: 10.1071/an18161] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Context The present study investigated the effects of several electrical-stimulation parameters with conventional chilling of heavy- and light-grade carcasses from commercial feedlot cattle on selected meat-quality attributes. Aims The aim was to determine the combination of electrical-stimulation parameters that produced the most desirable results in terms of meat quality, which will serve as a guide to processors seeking to enact best processes in the meat industry. Methods Low-voltage electrical stimulation (110 V peak, 17 pulses/s, 5-ms pulse width) was applied either early post-mortem (PM) at 7 min or late PM at 45 min, for either 30 or 60 s on steer carcasses (n = 98) divided into two weight categories (light (≤260 kg) and heavy (≥290 kg) grades). The Longissimus lumborum muscle was evaluated for sarcomere length, myofibril fragment length (MFL), calpain-1, calpastatin, shear force and drip loss (3 and 14 days PM). Key results There were no significant differences in sarcomere length and no sarcomere shortening was observed. There were minor inconsistencies where early stimulation coincided with marginally longer MFL at 3 and 14 days PM, while late stimulation produced the shortest MFL at 14 days PM. Higher decline in calpain-1 concentration (mean 36.2%) was recorded in the early stimulated carcasses compared with the late stimulated carcasses (mean 29.7%) from 1 to 24 h PM, while calpastatin concentration decreased at a similar rate (mean 24%). Early stimulation resulted in lower shear force (P < 0.05) at 3 days PM, especially in the heavier carcasses, indicating that higher initial temperature did accelerate tenderisation. At 14 days PM, there were no significant differences in shear force as regards stimulation time or carcass weight. Higher drip loss was however recorded in the early stimulated carcasses. Conclusions Early application of low-voltage electrical stimulation produced faster tenderisation early PM, due to higher rigor temperature, but, after aging for 14 days, all meat was acceptably tender with a lower variability, regardless of the stimulation time and carcass weight. Higher drip loss was associated with higher tenderness, which is normal and not a defect. Implications The use of low-voltage electrical stimulation should be encouraged for its ability to reduce variability in meat quality due to carcass-weight differences, especially in the current feedlot systems.
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OLIVEIRA GMD, ROCHA YJP, GALLO SB, TRINDADE MA, SOUZA GDM, DELGADO EF. Toughness in Santa Inês lamb meat has negative impact on consumer evaluation. REVISTA BRASILEIRA DE SAÚDE E PRODUÇÃO ANIMAL 2019. [DOI: 10.1590/s1519-9940200372019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
SUMMARY Meat tenderness is a major attribute for consumers worldwide. However, few studies investigate the importance of lamb meat tenderness for Brazilian consumers. This study assessed consumers’ evaluation of lamb meat with high shear forces. Eight lambs were slaughtered at 32.5±2.5kg of live weight and 5 to 6 months of age. The Longissimus dorsi muscle from both half carcasses was randomly assigned to four different postmortem processes: Tough Meat (TM), obtained by cold shortening, Fresh Meat (FM), Aging for 3 (A3) and 7 (A7) days postmortem . The variables measured were the sarcomere length, shear force (WBSF) and myofibrillar fragmentation index. We also applied the sensory analysis using affective acceptance tests with hedonic scale of nine points to measure texture, juiciness and overall quality of the meat. The postmortem processing for TM resulted in shorter sarcomere and greater shear values (p <0.05) compared to all other samples, while FM, A3 and A7, did not differ between the samples. Myofibrillar fragmentation was greater for A7 compared to TM (p <0.05), while FM and A3 showed intermediate values that did not differ between the treatments. In the sensory analysis, TM samples received significantly lower scores (p <0.01) for all attributes compared to other treatments and the attributes were not different between the post rigor processes. Consumers identified and evaluated negatively the meat samples with high WBSF. However, further studies are needed to elucidate the impact of smaller differences in WBSF, at intermediate values, on consumers’ evaluation.
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12
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Valente BS, Andreazza R, Xavier EG, Gomes MC, Pereira HDS, Ávila FDD. Composting for valuation of marine fish waste. REVISTA BRASILEIRA DE SAÚDE E PRODUÇÃO ANIMAL 2017. [DOI: 10.1590/s1519-99402017000400010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
SUMMARY This trial evaluated the composting for valuation of marine fish waste. The study was carried out in a composting cell (1.10m length, 1.50m width, 1.20m height, and 2.50m headroom), which received a mixture of marine fish waste (skin and fin) and reused wood shavings at a 7:3 proportion. The efficiency of the composting process was evaluated through analysis of biomass temperature, moisture, pH, ash, compost mineralization index, carbon/nitrogen ratio, total organic matter, total organic carbon and total nitrogen. Data were tested by analysis of variance and polynomial regression, and the means compared by Tukey's test at 5%. The results showed that composting is an efficient alternative for the valuation of fish residues. The compost complies with the Brazilian Standards (Normative Instruction 25/2009 of the Brazilian Ministry of Agriculture, Livestock and Food Supply). The C/N ratio lower than 15/1 combined with the high moisture content of the substrates inhibit the increase in the biomass temperature. The wood shavings reused for three consecutive times provide nitrogen. The addition of water to the composting process should be suppressed when using the proportion of 7kg fish waste and 3kg reused wood shavings.
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Effect of C/N on Water State during Composting of Kitchen Waste and Vegetable Waste Mixture. J CHEM-NY 2017. [DOI: 10.1155/2017/9409145] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The objective of this study was to evaluate the effects of the C/N ratio on the water state changes during the composting of kitchen waste (KW) and vegetable waste (VW) mixtures. The C/N ratios in KW and VW were 50.70 and 27.07, respectively, and the VW was added to the KW to amend the C/N ratio. Five composting treatments were used, R1 with 0% KW, R2 with 25% KW, R3 with 50% KW, R4 with 75% KW, and R5 with 100% KW, and the initial C/N ratios increased in the order R1 < R2 < R3 < R4 < R5. As the composting process progressed, the capillary water (CW) and multi-molecular-layer water (MMLW) were changed into entrapped water (EW), and a high C/N ratio could delay the changes in the water state. The percentage of EW and CW significantly positively correlated with the C/N ratio during the composting of KW. The composting process performed better in treatments R2 and R3 than in the other treatments, and it was found that treatments R2 and R3 each had a lag phase of around 4 d until the water states started to change.
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Cui B, Zhang Y, Wang F, Jamali MA, Wei L, Peng Z. Technical note: The effect of carcass deboning technique on the meat quality of cattle. J Anim Sci 2016; 94:4427-4433. [PMID: 27898874 DOI: 10.2527/jas.2016-0550] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The objective of this study was to evaluate the effects of the suspended carcass deboning technique on the meat attributes of electrically stimulated cattle ( = 10). A carcass deboning technique that removes the main bones without breakdown of the entire carcass was applied to suspended sides soon after slaughter. After 3 d of aging at 4°C, the shear force of the rectus femoris, longissimus lumborum, and supraspinatus muscles of the suspended carcass deboning technique was reduced by 27%, 29%, and 23% ( < 0.05), respectively. The carcass deboning technique increased the sarcomere length by 14%, 10%, and 16% ( < 0.05), and the myofibril fragmentation index was increased by 10%, 5%, and 13% ( < 0.05), respectively, for the same 3 muscles. There was no difference in the pH, color, or cooking loss between the treatment and the control ( > 0.05). The carcass deboning technique could be a viable approach to improve beef tenderness with a relatively short aging duration.
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Hoban J, Hopkins D, Kirby N, Collins D, Dunshea F, Kerr M, Bailes K, Cottrell J, Holman B, Brown W, Ponnampalam E. Application of small angle X-ray scattering synchrotron technology for measuring ovine meat quality. Meat Sci 2016; 117:122-9. [DOI: 10.1016/j.meatsci.2016.03.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 03/02/2016] [Accepted: 03/03/2016] [Indexed: 11/26/2022]
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Liu Y, Mao Y, Liang R, Zhang Y, Wang R, Zhu L, Han G, Luo X. Effect of suspension method on meat quality and ultra-structure of Chinese Yellow Cattle under 12-18°C pre-rigor temperature controlled chilling. Meat Sci 2016; 115:45-9. [PMID: 26826666 DOI: 10.1016/j.meatsci.2016.01.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Revised: 11/20/2015] [Accepted: 01/18/2016] [Indexed: 11/30/2022]
Abstract
This study was conducted to evaluate the effects of suspension method under 12-18 °C pre-rigor temperature controlled chilling on quality traits and ultra-structure of Chinese Yellow Cattle M. Longissimus lumborum (LL). After slaughter, the right sides of carcasses were hung by the Achilles tendon (SA), while the left sides were hung from the pelvic bone (SP). Both sides went through the 12-18 °C pre-rigor muscle temperature controlled chilling. LL muscles were aged for 1, 7 or 14 days and then evaluated for quality traits and ultra-structure. SP had no significant effect on myofibril fragmentation index, but significantly decreased the purge loss during aging and the Warner-Bratzler shear force values after aging for 1 day. Electron microscopy and sarcomere length examination of LL showed that SP resulted in extended I-bands and sarcomere length. To conclude, applying SP under 12-18 °C pre-rigor temperature controlled chilling is a potential method for the Chinese beef industry to improve tenderness especially after 1 day of aging.
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Affiliation(s)
- Yuqing Liu
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Taian, Shandong 271018, PR China
| | - Yanwei Mao
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Taian, Shandong 271018, PR China
| | - Rongrong Liang
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Taian, Shandong 271018, PR China
| | - Yimin Zhang
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Taian, Shandong 271018, PR China
| | - Renhuan Wang
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Taian, Shandong 271018, PR China
| | - Lixian Zhu
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Taian, Shandong 271018, PR China
| | - Guangxing Han
- Sishui Xinlv Food Co., Ltd., Jining, Shandong 273200, PR China
| | - Xin Luo
- Lab of Beef Processing and Quality Control, College of Food Science and Engineering, Shandong Agricultural University, Taian, Shandong 271018, PR China.
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Shen DS, Yang YQ, Huang HL, Hu LF, Long YY. Water state changes during the composting of kitchen waste. WASTE MANAGEMENT (NEW YORK, N.Y.) 2015; 38:381-387. [PMID: 25661690 DOI: 10.1016/j.wasman.2015.01.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Revised: 01/10/2015] [Accepted: 01/12/2015] [Indexed: 06/04/2023]
Abstract
Changes in water states during the composting of kitchen waste were determined. Three experiments, R(55), R(60), and R(65), with different initial moisture contents, 55%, 60%, and 65%, respectively, were performed. Three water states, entrapped water (EW), capillary water (CW), and multiple-molecular-layer water (MMLW), were monitored during the experiments. Changes only occurred with the EW and CW during the composting process. The percentage of EW increased, and the percentage of CW decreased as the composting process progressed. The R(60) experiment performed better than the other experiments according to changes in the temperature and carbon-to-nitrogen ratio (C/N). The percentage of EW correlated well (P<0.05) with the dissolved organic carbon content (DOC), electrical conductivity (EC), pH, and C/N, and was affected by the hemicellulose and cellulose contents.
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Affiliation(s)
- Dong-Sheng Shen
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, PR China
| | - Yu-Qiang Yang
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, PR China; Zhejiang Lantu Environmental Protection Co., Ltd, Hangzhou 310014, PR China
| | - Huan-Lin Huang
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, PR China
| | - Li-Fang Hu
- College of Quality and Safety Engineering, China Jiliang University, Hangzhou 310018, PR China
| | - Yu-Yang Long
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, PR China.
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Liu Y, Mao Y, Zhang Y, Liang R, Wang R, Zhu L, Meng X, Luo X. Pre-rigor temperature control of Chinese yellow cattle carcasses to 12–18°C during chilling improves beef tenderness. Meat Sci 2015; 100:139-44. [DOI: 10.1016/j.meatsci.2014.09.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2014] [Revised: 09/11/2014] [Accepted: 09/15/2014] [Indexed: 11/25/2022]
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Yang YQ, Chen ZX, Zhang XQ, Hu LF, Shen DS, Long YY. Effects of added polyacrylamide on changes in water states during the composting of kitchen waste. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:2295-2302. [PMID: 25182430 DOI: 10.1007/s11356-014-3513-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Accepted: 08/24/2014] [Indexed: 06/03/2023]
Abstract
The effects of adding polyacrylamide (PAM), to attempt to delay the loss of capillary water and achieve a better level of organic matter humification, in the composting of kitchen waste were evaluated. Four treatments, with initial moisture content of 60 % were used: 0.1 % PAM added before the start of composting (R1), 0.1 % PAM added when the thermophilic phase of composting became stable (at >50 °C) (R2), 0.1 % PAM added when the moisture content significantly decreased (R3), and no PAM added (R4). The introduction of PAM in R1 and R2 significantly increased the capillary force and delayed the loss of moisture content and capillary water. The introduction of PAM in R2 and R3 improved the composting process, in terms of the degradation of biochemical fractions and the humification degree. These results show that the optimal time for adding PAM was the initial stage of the thermophilic phase.
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Affiliation(s)
- Yu-Qiang Yang
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310012, People's Republic of China
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