scholarly journals Contemporary light sources and their impact on the discoloration and oxidation of fresh beef products

2017 ◽  
Author(s):  
◽  
Jade Victoria Cooper
Keyword(s):  
Lipid Oxidation ◽  
Meat Quality ◽  
Ground Beef ◽  
Light Sources ◽  
Fresh Meat ◽  
Led Light ◽  
Beef Products ◽  
Retail Display ◽  
The Impact ◽  
Whole Muscle

Discolored fresh meat products in a retail setting are often perceived negatively by consumers when making purchasing decisions. Prolonging fresh meat color is critical for the retail industry in regard to sales and consumer perception. Variation in retail display settings can impact meat color shelf life from both a discoloration and oxidation standpoint. Lighting technologies are known to impact meat discoloration due to light intensities and temperature variations. A growing demand for the use of energy efficient lighting sources such as light emitting diode (LED) bulbs is being adopted in the United States. Therefore, it is imperative to know the impact these new lighting technologies have on fresh meat quality. Three trials were conducted to determine the impact of LED lighting technologies in comparison to commonly used fluorescent (both low [FLO] and high - UV [HFLO]) bulbs, and no light source (DRK). In a study conducted on ground beef from the Semimembranosus (SM) (n = 20) patties at two different fat levels (5 and 25 percent) had superior a* values, oxymyoglobin concentrations (MbO2), and lipid oxidation levels (TBARS) than those treated with LED or FLO light sources over 7 days of retail display. Patties displayed under LED bulbs had higher a* values and MbO2 concentrations than patties displayed under FLO light sources. Data indicated that the use of LED bulbs on ground beef promoted greater red color retention and less oxidation than FLO bulbs in a retail display setting. To evaluate retail display settings and fresh beef cuts further, two whole muscle cuts one color labile cut (Triceps brachii [TB]) (n = 20) and steaks from the SM (n = 20), known to be moderately color stable were evaluated under HFLO, FLO, and LED light sources over 7 days of retail display. For both whole muscle cuts, the use of HFLO light sources promoted greater redness retention as indicated by MbO2 and a* values, less lipid oxidation as indicated by TBARS values, and less undesirable metmyoglobin (MMb) formation in comparison to steaks displayed under FLO or LED light treatments. The use of LED bulbs for prolonged ground beef retail display was superior to other light sources. However, ground beef is rarely displayed in retail settings for an extended period of time. The use of LED bulbs showed no advantages when displaying whole muscle cuts. Therefore, data from this study suggests while from an energy efficiency standpoint LED bulbs can be beneficial to retail settings. However, from a fresh meat quality standpoint, there is no advantage from color or oxidative standpoint for using LED lights in a retail display setting for fresh beef products.

scholarly journals Influence of Plant-Based Proteins on the Fresh and Cooked Characteristics of Ground Beef Patties

Foods ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 1971
Author(s):  
Jase J. Ball ◽  
Ross P. Wyatt ◽  
Barry D. Lambert ◽  
Hunter R. Smith ◽  
Tristan M. Reyes ◽  
...  
Keyword(s):  
Lipid Oxidation ◽  
Ground Beef ◽  
Value Added ◽  
Cooking Time ◽  
Plant Protein ◽  
Soy Protein Concentrate ◽  
Plant Proteins ◽  
Beef Products ◽  
Retail Display ◽  
Textured Vegetable Protein

Blended meat/plant products are capturing industry market space at the retail counter for value-added beef products. Plant protein ingredients can be added to meat formulations to create appealing and functional products. Ground beef was combined with one of three plant protein inclusion treatments: control, pea, oat, or rice, along with 5% textured vegetable protein (TVP) and 1.5% soy protein concentrate then formed into 226 g patties containing up to 10% plant-based proteins. Patties were analyzed for fresh and cooked characteristics throughout a 5- or 7-day retail display. The inclusion of plant-based proteins negatively affected the instrumental tenderness values which were greater (p < 0.01) in plant-inclusion patties compared to the control patties. The inclusion of plant proteins increased (p = 0.01) the cooking yield of patties compared to the control. Cooking time was longer (p = 0.04) for oat patties compared to the control patties. Cooked color values for vegetable inclusion patties did not affect (p = 0.12) lightness (CIE L*) values; however, redness (CIE a*) was greater (p < 0.01) for rice than all other treatments and yellowness (CIE b*) values were greater (p < 0.01) for all protein treatments compared to the control. Rice improved (p < 0.01) fresh a* values on day 5 of display compared to the control; whereas pea decreased (p = 0.04) values compared to the control. There was a treatment × day interaction (p < 0.01) on lipid oxidation values with a reduction in values on day 3 for all vegetable proteins compared to the control and on day 7 lipid oxidation was reduced (p ≤ 0.03) for oat patties.

scholarly journals 99 Effects of replacing monensin and tylosin in finishing cattle diets with essential oil and/or benzoic acid on meat color and oxidative stability of ribeye steaks and ground beef

2019 ◽  
Vol 97 (Supplement_2) ◽  
pp. 56-56
Author(s):  
Lydia M Wang ◽  
Shiqi Huang ◽  
Sebastian Chalupa-Krebzdak ◽  
Sandra M Vasquez Mejia ◽  
Benjamin M Bohrer
Keyword(s):  
Benzoic Acid ◽  
Lipid Oxidation ◽  
Essential Oils ◽  
Repeated Measures ◽  
Block Design ◽  
Ground Beef ◽  
Thiobarbituric Acid ◽  
Finishing Cattle ◽  
Instrumental Color ◽  
Beef Products

Abstract This study examined the effects of replacing monensin and tylosin with essential oils and/or benzoic acid in finishing cattle diets on beef color stability and lipid oxidation during a simulated retail display period. The longissimus thoracis (LT) and semimembranosus (SM) muscles were obtained from 63 steers that were fed for 98 days on 1 of 5 finishing diets: no additional supplement (CON), monensin/tylosin (M/T), essential oils (EO), benzoic acid (BA), or a combination of essential oils and benzoic acid (COMBO). Instrumental color measured with a Minolta colorimeter and visual discoloration evaluated by two trained panelists were recorded daily for three beef products placed under simulated retail conditions, until a 60% surface discoloration was observed. The three beef products evaluated were LT steaks, and two types of ground beef patties manufactured with the SM muscles (lean – no additional fat and regular – 25% added fat). The thiobarbituric acid reactive substances (TBARS) assay was used before and after the shelf life display to determine the degree of lipid oxidation for products during the display. Data were analyzed as a randomized complete block design with the GLIMMIX procedure of SAS using repeated measures. Results indicated a treatment by day interaction (P < 0.0001) for visual discoloration and instrumental color of all three products. At the end of the display period, products from the COMBO diet had on average the least amount of visual discoloration and the greatest a* (redness) value, while the CON steaks and M/T ground beef had the most discoloration and the lowest a* values. TBARS values at d 0 and d 7 did not differ (P > 0.23) among treatments for all three products. Overall, supplemental ingredients in feed did not affect the color and degree of lipid oxidation of steaks and ground beef to a level deemed detrimental.

scholarly journals Effect of Fermented Winery By-Product Supplemented Rations on the Temperament and Meat Quality of Angus-Hereford X Steers During Feeding in a British Columbia Feedlot

2014 ◽  
Vol 3 (6) ◽  
pp. 124 ◽  
Author(s):  
Paul E. Moote ◽  
John S. Church ◽  
Karen S. Schwartzkopf-Genswein ◽  
Jonathan D. Van Hamme
Keyword(s):  
Meat Quality ◽  
Value Added ◽  
Meat Tenderness ◽  
The Novel ◽  
Feeding Period ◽  
Water Control ◽  
Beef Products ◽  
Cattle Feeds ◽  
Dietary Treatments ◽  
The Impact

<p class="OJAS-Paragraph-text">Novel value-added beef products provide improved product differentiation within the beef marketplace. This study evaluated the impacts of supplementing feeds with fermented winery by-products (WB) to produce the novel beef product labeled by industry as “wine-finished beef”. To evaluate the impact of this feed, a total of 69 Angus-Hereford X steers were placed in four pens (n=18,17,17,17), one replicate pen per treatment, and fed finishing rations containing equal amounts of either 6-7% WB or 6-7% water (Control; C) over a 143 day feeding period. Dietary treatments were not significantly different with respect to energy or chemical contents (<em>P </em>&gt; 0.05). Interestingly, the average daily gains (ADG; kg*d<sup>-1</sup>) of cattle did not differ between diets (<em>P </em>&gt; 0.05); however, the ADG of all beef cattle changed over the feeding period (<em>P </em>&lt; 0.0041). Cattle temperament, evaluated by measuring their flight speed, changed over time (<em>P</em> = 0.0097), but not between diets (<em>P </em>= 0.6938). Meat quality attributes including chemical, colour, and tenderness properties did not differ (<em>P </em>&gt; 0.05) between diets with the exception of ground steak, which was darker (<em>P </em>= 0.0477) in cattle fed WB compared to C supplemented feeds, respectively. Supplementing cattle feeds with WB provides a new marketing stream for beef products with no observed differences to cattle behaviour, animal gains or meat tenderness.</p>

Salmonella and Campylobacter Baseline in Retail Ground Beef and Whole-Muscle Cuts Purchased during 2010 in the United States

2012 ◽  
Vol 75 (12) ◽  
pp. 2110-2115 ◽  
Author(s):  
JESSIE L. VIPHAM ◽  
MINDY M. BRASHEARS ◽  
GUY H. LONERAGAN ◽  
ALEJANDRO ECHEVERRY ◽  
J. CHANCE BROOKS ◽  
...  
Keyword(s):  
Modified Atmosphere Packaging ◽  
Ground Beef ◽  
The United States ◽  
Retail Markets ◽  
Beef Products ◽  
Pathogen Control ◽  
Biochemical Testing ◽  
American Cities ◽  
Whole Muscle ◽  
Campylobacter Spp

Salmonella enterica and Campylobacter spp. cause a considerable number of human illnesses each year, and the vast majority of cases are foodborne. The purpose of this study was to establish the baseline of Salmonella and Campylobacter in beef products purchased from U.S. retail markets. Sampling was carried out in 38 American cities. Retail raw ground and whole-muscle beef (n = 2,885) samples were purchased and examined for the presence of Salmonella. Samples testing positive for Salmonella were identified with the commercial BAX System, which is a real-time PCR–based system. Of the original samples purchased, 1,185 were selected and tested for the presence of Campylobacter. Positive samples were isolated via direct plating and confirmed via agglutination and biochemical testing. Salmonella was detected in 0.66% of the total samples purchased. The prevalence of Salmonella in ground beef packages was 0.42% for modified atmosphere packaging, 0.63% for chub packaging, and 0.59% for overwrapped packages. Salmonella was detected in 1.02% of whole-muscle cuts. There was no relationship (P = 0.18) between product type (ground or whole muscle) and the percentage of positive samples. Campylobacter was recovered from 9.3% of samples. A greater percentage (17.24%, P &lt; 0.01) of whole-muscle cuts tested positive for Campylobacter compared with ground beef samples (7.35%). Estimating pathogen baselines in U.S. retail beef is essential for allotting resources and directing interventions for pathogen control. These data can be utilized for a more complete understanding of these pathogens and their impact on public health from the consumption of beef products.

scholarly journals The Relationship between Lipid Content in Ground Beef Patties with Rate of Discoloration and Lipid Oxidation during Simulated Retail Display

Foods ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 1982
Author(s):  
Yifei Wang ◽  
Rubén Domínguez ◽  
José M. Lorenzo ◽  
Benjamin M. Bohrer
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Lipid Oxidation ◽  
Acid Composition ◽  
Lipid Content ◽  
Subcutaneous Fat ◽  
Ground Beef ◽  
Instrumental Color ◽  
Beef Patties ◽  
Retail Display

The relationships between the lipid content, lipid oxidation, and discoloration rate of ground beef during a simulated retail display were characterized in this study. A total of 276 batches of ground beef were manufactured with inside rounds and subcutaneous fat from 138 beef carcasses at different targeted levels of lean:fat. There was a total of four different targeted grind levels during the manufacture of the ground beef, and the lipid content for the samples used in this study ranged from 2% to 32% total lipid. Fatty acid composition was determined based on subcutaneous fat, whereas the proximate composition of moisture and total lipids, instrumental color, visual discoloration, and lipid oxidation measured as thiobarbituric acid reactive substances were evaluated on ground beef patties during 7 days of simulated retail at 4 °C display under LED lights. Analysis for the correlation and the creation of linear regression models indicated that lipid content played a more critical role in the discoloration rate compared to lipid oxidation and fatty acid composition. Lipid oxidation could be more reliably predicted by lipid content and instrumental color compared to visual discoloration. Overall, ground beef formulated with greater lipid content is expected to experience greater rates of lipid oxidation and discoloration during retail display.

scholarly journals Adoption and consequences of new light-fishing technology (LEDs) on Lake Tanganyika, East Africa

2019 ◽  
Author(s):  
Huruma Mgana ◽  
Benjamin M. Kraemer ◽  
Catherine M. O’Reilly ◽  
Peter A. Staehr ◽  
Ismael A. Kimirei ◽  
...  
Keyword(s):  
East Africa ◽  
Field Experiments ◽  
Lake Tanganyika ◽  
Light Emitting Diode ◽  
Light Sources ◽  
Led Light ◽  
Light Spectra ◽  
Technological Advances ◽  
Fish Catch ◽  
The Impact

AbstractMaintaining sustainable fisheries requires understanding the influence of technological advances on catch efficiency. Fisheries using light sources for attraction could be widely impacted by the shift to light emitting diode (LED) light systems. We studied the transition from kerosene lanterns to LED lamps in Lake Tanganyika, East Africa, examining factors that led to adoption as well as the impact of the new light sources on fish catch and composition. We used a combination of field experiments with catch assessments, fisher surveys, underwater light spectra measurements, and cost assessments to evaluate the impact of switching from kerosene to LED lamps. Overall, we found a very rapid rate of adoption of homemade outdoor LED light systems in Lake Tanganyika. Most of the batteries used to power these lamps were charged from the city power grid, rather than photovoltaic cells. The LED light spectra was distinct from the kerosene light and penetrated much deeper into the water column. Regardless of light type, most of the fish caught within the two dominant species were below maturity, indicating that current fishery is not sustainable. Although the LED lamps were associated with a slight increase in catch, environmental factors, particularly distance offshore, were generally more important in determining fish catch size and composition. The main advantages of the LED lamps were the lower operating costs and their robustness in bad weather. Overall, the use of battery-powered LED lighting systems to attract fish in Lake Tanganyika appears to reduce economic costs but not contribute new impacts on the fishery.

scholarly journals Retail Display Lighting and Packaging Type May Influence Beef Flavor and Oxidative Stability

2019 ◽  
Vol 3 (2) ◽  
Author(s):  
T. Cramer ◽  
J. F. Legako ◽  
J. C. Brooks
Keyword(s):  
Lipid Oxidation ◽  
Thiobarbituric Acid ◽  
Gluteus Medius ◽  
Triceps Brachii ◽  
Beef Flavor ◽  
Longissimus Lumborum ◽  
Retail Display ◽  
Muscle Types ◽  
Psoas Major ◽  
The Impact

ObjectivesThis study aimed to evaluate the impact of retail display lighting and packaging type on beef flavor and lipid oxidation in five muscles.Materials and MethodsSubprimals (n = 40 strip loins, 60 shoulder clods, 60 tenderloins, 24 inside rounds, 60 top butts) were randomly collected from separate carcasses. At 7d postmortem muscles (Longissimus lumborum, LL; Triceps brachii, TB; Psoas major, PM; Semimembranosus, SM; Gluteus medius, GM) were fabricated and sliced to 2.54cm steaks. Per muscle, 120 steaks were randomly assigned to packaging treatments: vacuum rollstock (ROLL); high-oxygen (80% O2/20% CO2; HIOX); overwrapped in a motherbag with carbon monoxide (0.4%CO/30%CO2/69.6%N2; CO); and traditional overwrap (OW), which was vacuum packaged until immediately prior to display. Packages were stored in the dark at 2°C an additional 13 d prior to retail display, then were displayed under fluorescent lights (FL) or light-emitting diodes (LED) with a third treatment in dark storage (DARK). All were held in their respective light treatments at 2°C for 72h, then assigned for trained panels or chemical analysis, vacuum packaged and frozen at –20°C. For sensory analysis steaks were thawed to 4°C and cooked to 71°C. Panelists (n = 8) were trained to evaluate twelve flavors, overall juiciness and tenderness, which were scored on a 100-point scale (0 = not present; 100 = extremely present). Lipid oxidation of raw steaks was quantified as 2-thiobarbituric acid reactive substances (TBARS; mg malondialdehyde (MDA)/kg beef).ResultsNo three-way interaction (P ≥ 0.10) or lighting effect (P ≥ 0.09) was observed for trained panels or TBARS. Cardboard flavor had a muscle×lighting interaction (P = 0.02). In GM, FL had greater (p < 0.05) cardboard than other lighting; in other muscle types lighting was similar. Muscle×packaging influenced three attributes (P ≤ 0.02). Steaks in ROLL were sweeter (p < 0.05) than other packaging in GM, PM and TB; ROLL was juicier (p < 0.05) than other packaging in GM, PM, and SM. Across all packaging types tenderness was greatest for PM, while SM was least tender (p < 0.05) in CO, HIOX and OW packaging. Packaging influenced nine flavors (P ≤ 0.01); ROLL was greatest in beef ID, bloody/serumy, fat-like, umami, and salty, while HIOX scored greatest for oxidized, bitter, and sour. Brown/roasted was greatest (p < 0.05) in HIOX and CO. Muscle impacted liver-like flavor (P = 0.01), which was lower (p < 0.05) in SM than all other muscle types; LL, TB, PM and GM were similar (p > 0.05) for liver-like. Packaging influenced TBARS (p < 0.01); HIOX had the greatest concentration of MDA, followed by CO, OW and ROLL with the lowest (p ≤ 0.05). Muscle influenced TBARS (P < 0.01), where TB was greatest (p < 0.05), followed by SM, PM, and GM, which were similar (p > 0.05); LL had the lowest MDA concentration. Oxidized (P < 0.01, r = 0.34), cardboard (P < 0.01, r = 0.30), bitterness (P < 0.01, r = 0.23), and sourness (P < 0.01; r = 0.22) were positively correlated with TBARS, while beef ID (P < 0.01, r = –0.23), umami (P < 0.01, r = –0.23), and tenderness (P < 0.01; r = –0.21) were negatively correlated.ConclusionRetail display lighting did not directly influence sensory characteristics or lipid oxidation; lighting only impacted cardboard flavor in an interaction with muscle type. These results suggest after 72h retail display, flavor differences between steaks of similar muscle and packaging displayed under LED or fluorescent lights may not be distinguishable.

scholarly journals Extending the shelf-life of beef steaks using acerola cherry powder and rosemary extract

2021 ◽  
Author(s):  
Jessie B Van Buren ◽  
Brianna J Buseman ◽  
Tanya M Weber ◽  
James A Nasados ◽  
Jessica M Lancaster ◽  
...  
Keyword(s):  
Oxygen Consumption ◽  
Lipid Oxidation ◽  
Shelf Life ◽  
Extended Period ◽  
Rosemary Extract ◽  
Beef Products ◽  
Beef Steaks ◽  
Retail Display ◽  
Reducing Activity ◽  
Shelf Life Stability

Improvements in retail shelf-life of exported beef will help with merchandising and increase competitiveness in the worldwide market for US beef products. The objective of this study was to determine the effect of topically applying acerola cherry powder or rosemary extract from various suppliers on beef bone-in short rib steak and chuck roll steak shelf-life. USDA Choice beef bone-in short ribs (IMPS 123A) and chuck rolls (IMPS 116A) were aged (0°C) for 28 d post-fabrication. Following aging, 1.02 cm-thick steaks were cut (N = 126) and systematically assigned to a treatment based on steak location within the subprimal. Treatments included: untreated control (C), topically sprayed (2ml) with an acerola cherry powder solution (0.05%) from one of three suppliers (C1, C2, C3), or topically sprayed (2ml) with a rosemary extract solution (0.10%) from one of three suppliers (R1, R2, R3). Half of the steaks were assigned to d 0 lipid oxidation, metmyoglobin reducing activity (MRA), and oxygen consumption; the remaining steaks were assigned to color evaluation over 4 days of retail display followed by d 4 lipid oxidation and MRA. Short rib steaks treated with antioxidants had a brighter oxygenated lean color than control steaks (P &lt; 0.001). There was an interaction (P = 0.028) between time of retail display and MRA. Short rib steaks treated with C3 and R2 did not change in MRA between d 0 and 4 (P = 0.620, P = 0.428, respectively). Chuck roll steaks treated with C1, C2, C3, R2, and R3, all had a higher, or more desirable, MRA than the control steaks on d 0 (P &lt; 0.001). Applying topical antioxidants improves the shelf-life stability of steaks from beef bone-in short ribs and chuck rolls aged for an extended period.

Process Humidity Affects Salmonella Lethality at the Surface and Core of Impingement-Cooked Meat and Poultry Products

2021 ◽  
Author(s):  
Ian M. Hildebrandt ◽  
Nicole O Hall ◽  
Michael K. James ◽  
Elliot T. Ryser ◽  
Bradley Marks
Keyword(s):  
Ground Beef ◽  
Performance Standards ◽  
Pilot Scale ◽  
Chicken Breast ◽  
Poultry Products ◽  
Surface Samples ◽  
Air Impingement ◽  
The Impact ◽  
Whole Muscle ◽  
Chicken Patties

Recent revisions to USDA FSIS compliance and safe harbor guidelines for ready-to-eat meat and poultry products addressed process humidity requirements. Given the lack of prior data for impingement-cooked products, this project aimed to evaluate the impact of process humidity on Salmonella lethality at the product core and surface, and compliance of the results with USDA FSIS lethality performance standards. Whole muscle beef strips, ground beef patties, whole muscle chicken breast fillets, and breaded ground chicken patties were inoculated with an 8-serovar cocktail of Salmonella. Beef and chicken samples were cooked in a pilot-scale moist-air impingement oven to a core temperature of 70.0 or 72.8°C, respectively, immediately quenched in liquid nitrogen, and dissected to obtain core and surface samples. Variables included oven temperature (218, 232°C), air velocity (0.7 and 2.8 m/s), and oven humidity (0.7, 15, 30, or 70% moisture by volume (% v/v)). Additional treatments were performed to examine the impact of supplemental critical control processes, such as increased endpoint temperature, post-oven carryover time, and pre- or post-oven steam treatments. Salmonella reductions of &gt;7 log were reliably achieved in chicken patties regardless of the processing variables; however, none of the treatments reliably ensured &gt;6.5 log reductions of Salmonella in ground beef. A majority of whole-muscle samples failed to meet the required performance lethality when processed at 0.7% v/v; however, Salmonella inactivation was significantly improved (P &lt; 0.05) at oven humidities of &gt; 30% v/v. Dry oven conditions achieved greater Salmonella lethality at the core than at the surface for multiple products (P &lt; 0.05). The efficacies of minimal and supplemental critical controls were product-, process-, and humidity-dependent (P &lt; 0.05). Overall, process humidity and product variability should be considered in regulatory requirements and process validations.

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