This study was carried out to elucidate the relationship between different fat levels (0%, 5%, 10%, 15%, 20%, and 25%) and the quality of ground pork patties cooked to reach an internal temperature of $75^{\circ}C$ in a microwave oven. The relationship between fat level and cooking rate of pork patties cooked by microwave energy was highly significant ($R^2=0.72$), and had a low determination coefficient ($R^2=0.55$). The relationship between fat level and total cooking loss of pork patties cooked by microwave energy was also very significant, with a high correlation coefficient of $R^2=0.89$. The correlation coefficient between fat level and cooking drip loss of patties cooked by microwave energy was 0.92, which was highly significant. Although the correlation coefficient between fat level and evaporation loss had a negative value ($R^2=-0.63$), there was a highly significant relationship between fat level and shear force of pork patties cooked by microwave energy.
In this study, the physicochemical, microbial, and sensory properties of law-fat hamburger patties during storage for 25 days at $7{\pm}1^{\circ}C$ were investigated. The law-fat hamburger patties were manufactured by three different packing methods (control: added with 10% lard regular-fat patty, T1: added with 10% lard and organic vegetable of regular-fat patty, T2: added with 3% olive oil of vegetability low-fat patty, T3: added with 3% lard of low-fat patty). The pH of all treated samples increased as the storage time increased, and then decreased after 15 days of storage. The low-fat hamburger patty added with organic olive oil (T2) showed significantly higher pH (p<0.05) compared with other treatments (T1 and T3). The TBARS values of the all treated samples tended to increase after 5 days of storage, and then significant quality loss was observed after 15 days of storage period for the control (T1). However, the samples of the vegitability low-fat patty added organic olive oil had longer shelf-life than the control. The total bacterial counts were 7 log CFU/g after 15 days and 20 days of storage for the control and treatments, respectively. The results of this study showed that the storage period of the treatments was slightly extended compared with the control. Low-fat hamburger patties showed no differences for overall acceptability between control and other patties.
Kim, Sung-Jin;Choi, Won-Seok;You, Sang-Guan;Min, Yun-Sik
Korean Journal of Food Science and Technology
/
v.39
no.1
/
pp.55-60
/
2007
This study used glucomannan as a fat substitute to produce low-fat patties with chicken meat, of which consumer consumption is increasing. In the case of a cooked meat patty, the crude fat content of the group treated with glucomannan was higher than that of a control when cooked. The cooking loss and reduction rate in the diameter of the control patties were higher than those of the group treated with glucomannan. Cohesiveness and chewiness of the group treated with glucomannan were higher than those of the control. As a result of sensory evaluation, there were no significant differences in the tenderness, color, odor and overall taste among the patties, but the juiciness of the group treated with glucomannan was lower than that of the control. There were no big differences in the pH of the patties during the frozen storage period. The volatile basic nitrogen (VBN) content of all of the types of patties gradually increased up to 7.97-8.56 mg% at the fourth week of storage, but these VBN values are hygienically safe. From these results, there was no large quality difference between a low-fat chicken patty to which glucomannan was added and a control. Therefore, it was confirmed that a good quality low-fat chicken patty can be made by controlling the fat and glucomannan content.
Journal of the Korean Society of Food Science and Nutrition
/
v.30
no.3
/
pp.488-493
/
2001
The know the possibility in development of the low-fat beef patty models using crucian carp9 extraction residues (CCER, freeze dried powder : 5%, 10%, 15%), those protein nutritional quality, texture, color and sensory properties were investigated. About 13∼23% (on dry basis) of lipid in control was reduced in cooked beef patties with the higher addition ratios of CCER. In vitro protein digestibility was not changed in raw patties before cooking but 2∼4% higher digestibility was revealed in cooked patties. Computed protein efficiency ratio (C-PER) and discriminant computed protein efficiency ratio (DC-PER) of beef patties containing CCER were almost same as control. Lightness and red color value of both (raw and cooked) beef patties were decreased with the higher CCER addition ratios but brown color value of cooked samples were similar to control. Stronger hardness was noted in all beef patties containing CCER significantly (p<0.05). Consumer's acceptability were generally decreased by addition of CCER, but 10% level could be recommendable in beef patty processing.
Park, Jong-Chul;Jeong, Jong-Yon;Lee, Eui-Soo;Choi, Ji-Hun;Choi, Yun-Sang;Yu, Long-Hao;Paik, Hyun-Dong;Kim, Cheon-Jei
Korean Journal of Food Science and Technology
/
v.37
no.3
/
pp.412-417
/
2005
Effects of substituting olive, corn, soybean, and sunflower oils (each at 50% substitution) on chemical composition and sensory quality of beef hamburger patties were determined. Although beef patties added with plant oils were not different in chemical composition to control (added beef fat 10%), they had 2.0-3.8% lower caloric contents, 3.7-5.9% lower cooking loss, and less diameter and thickness changes after cooking. Beef patties with olive oil had lowest $L^*-values$ before and after cooking. In textural properties, control had higher hardness, cohesiveness, and gumminess than patties with plant oils, whereas no differences in springiness were observed between control nod all plant oil-treated patties. Beef patties containing olive oil had higher scores for overall acceptability than other patties.
Jo, Yeon-Ji;Kwon, Yun-Joong;Min, Sang-Gi;Choi, Mi-Jung
Food Science of Animal Resources
/
v.35
no.1
/
pp.71-79
/
2015
This study was performed to determine the effect of multilayered fish oil (FO) emulsion without or with trans-cinnamal-dehyde on pork patties. Multilayered FO (-primary, -secondary, -tertiary) emulsions were prepared using a layer-by-layer deposition technique with Tween 20, chitosan, and low methoxyl pectin, and were added to pork patties at the same concentration. Pork patties were then stored for 20 d in a refrigerator ($5^{\circ}C$) to study changes in quality. The results showed that the pH value of all samples significantly decreased but cooking loss increased during storage (p<0.05). However, water-holding capacity and moisture content showed no remarkable difference between treatments and storage periods (p>0.05). All pork patties containing multilayered FO (treated samples) showed higher values for lightness and significantly lower values for yellowness compared to control pork patties (untreated sample). Lipid oxidation was higher in treated pork patties than in control pork patties during storage. In addition, lipid oxidation and total viable bacterial count in pork patties decreased as the number of coating layers increased. However, hardness, cohesiveness, and springiness of all samples showed no significant change during storage (p>0.05) as compared to fresh pork patties. Furthermore, these did not remarkable change with addition of trans-cinnamaldehyde in all pork patties. From our results, we suggest that FO emulsion did not affect the texture characteristics of fresh pork patties, indicating that it could be used to improve the quality of pork patties by contributing high-quality fat such as unsaturated fatty acids.
Patties were prepared using Barbari male goats meat (age about 4 yrs) and packed in HDPE under vacuum (VP) and aerobically (AP). Packed patties were stored at 4$\pm$1$^{\circ}C$ and evaluated for physico-chemical, microbiological and sensory changes on days 0, 5, 10, 15, 20 and 25. Overall mean water activity ($a_{w}$), moisture (%), fat (%), pH, TBA number and W-B shear force values (kg/$cm^{2}$) of patties were 0.983, 61.93, 18.39, 6.38, 0.150 and 0.86, respectively. Except pH that was significantly higher and TBA number significantly lower in VP patties, treatment had no significant (p>0.05) effect on other physico-chemical traits. However, storage period significantly (p<0.05) affected physico-chemical traits. Moisture (63.79%) and $a_{w}$ (0.985) were significantly (p<0.05) higher on day 25. Patties became firmer on day 20 onwards as indicated by higher W-B shear force. Though packaging method had no significant effect, storage period influenced microbial counts. The standard plate counts (SPC), which were initially log 5.98 CFU/g decreased significantly (p<0.05) on day 10 followed by steady increase and reaching log 4.89 on day 25. Almost similar trend was observed for psychrotrophic bacteria counts. Lactic acid bacteria counts declined as the storage period progressed. Coliforms, and yeast and mould counts were either not detected by the method used or were very low in numbers. All samples of AP patties revealed swollen, greasy and sticky surface with spongy texture on day 20 whereas only some of the VP patties shown such changes on day 20. Results indicated that vacuum packaging had definite advantage in preserving the sensory quality of patties than aerobic packaging but it did not help in extending the shelf-life beyond 15 days.
The present study was carried out to investigate the effects of soy protein hydrolysates (SPHs) addition on the quality characteristics of pork patties. The SPHs was prepared by subcritical water process (SWP) at 180℃ without holding time and mixed with the pork patty components at varying concentrations (0-3%), and the patties were stored at 4℃ for 14 d. As quality parameters, instrumental color, thiobarbituric acid-reactive substances (TBARS), pH, water holding capacity (WHC) and shear force were measured at the end of storage. Regardless of SPHs concentration, the addition of SPHs significantly manifested low L* and high a* values compared to those of untreated control (p<0.05). For b* value, addition of SPHs in the 0.5-1.5% was unaffected, while >2.0% of SPHs caused significantly lower b* than control (p<0.05). The color changes in pork patties with and without SPHs were also identified in visual appearance where the pork patties containing 0.5-2.0% showed bright red color which was comparable to brownish color of control and patties containing >2.5% SPHs. Lipid oxidation was delayed by the addition of 0.5-1.5% SPHs, while it was accelerated by the addition of 3% SPHs. The pH of patties increased with increasing concentration of SPHs, whereas there were no significant differences in WHC and shear force of patties. Consequently, the results indicated that the addition of 0.5-1.5% SPHs had a potential advantage in suppressing oxidative deterioration of fat-containing meat products during chilled storage.
This study investigated the effects of different charcoals on the occurrence of 16 polycyclic aromatic hydrocarbons (PAHs) in grilled beef steaks and beef patties. Seven different charcoals were used as follows: from oak wood (C1), from orange wood (C2), from Valonia oak wood (C3), from Marabu wood (C4), extruded charcoal from beech wood (C5), from coconut shells (C6), and from hazelnut shells (C7). The grilling times for each charcoal type were 6 min for the beef patties and 7 min for the beef steaks, until the internal temperature reached at least 74℃. The total concentration of 16 PAHs (PAH16) in beef steaks grilled with C1 (35.75 ㎍/kg) and C7 (36.39 ㎍/kg) was higher than that of C3 (23.80 ㎍/kg) and C6 (24.48 ㎍/kg; p<0.05). The highest amounts of PAH16 (216.40 ㎍/kg) were determined in the beef patty samples grilled using C5 (p<0.05). The summation of benzo[a]anthracene, chrysene, benzo[b]fluoranthene and benzo[a]pyrene, referred to as PAH4, was not detected in any of the beef steaks, whereas it was determined in the beef patties grilled with C2 (7.72 ㎍/kg) and C5 (22.95 ㎍/kg; p<0.05). The PAH16 concentrations of the beef patty samples in each charcoal group were significantly higher compared to the beef steaks (p<0.05). To avoid the formation of high PAH levels, the use of extruded charcoal and hazelnut shell charcoal should therefore be avoided when charcoal grilling beef steaks and beef patties, and low-fat meat products should be preferred.
Four different pork patties were made with two levels, HP/FP-3% and HP/FP-6%, containing 3.0 and 6.0% HP(hot air dried sweet persimmon powder)/FP(freeze-dried sweet persimmon powder), respectively. After manufacture, the meat patties were packaged with polyvinyl wrap and stored at 4℃ for 8 days. CTL(control) and HP-3% meat patties were significantly(p<0.05) higher in moisture content than the other samples. FP-6% was found higher in protein content than the other treatments. FP-3% had a higher fat content than other meat patty samples. However, ash contents were not found significantly(p>0.05) different among the meat patty samples. The value of pH, L* and a* values were decreased as the cold storage time increased in all treatments(p<0.05). WHC(water holding capacity) of CTL and HP-6% and cooking loss of HP-3% were significantly(p<0.05) decreased with increased storage period. The diameter and thickness of all meat patties decreased with increasing the storage period. VBN(volatile basic nitrogen) values of all meat patties were increased(p<0.05) with increased storage period. TBARS (thiobarbituric acid reactive substance) of treatments were higher than that of CTL during whole storage time. The number of microorganisms(Total plate counts, Escherichia coli.) were maintained below 4.61 log10 CFU/cm2 during the whole storage period. In sensory evaluation, treatment groups had higher(p<0.05) scores in aroma, flavor, color and overall acceptability.
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