scholarly journals Farklı Çözündürme Yöntemlerinin Dondurulmuş Midye ve Karides Etlerinin Kalite Parametreleri Üzerindeki Etkisi

Author(s):  
Zafer Ceylan ◽  
Kubra Unal

In this study, the effects of different thawing methods on microbial, physical and sensory quality of frozen mussels and shrimp samples were investigated. The thawing process was carried out at the refrigerator temperature (B4: 4±1ºC), at room temperature (O22: 22±1ºC), in warm water (I30: 30±1ºC) and in hot water (S55: 55 ± 1ºC). Total mesophilic bacteria counts in mussel and shrimp meat samples were found with the lowest in B4 (2,74 log KOB / g) and S55 (3,35 log KOB / g) groups, the highest values were found in the I30 group in both samples. In terms of psychrophilic bacteria, the lowest results were determined in the groups thawed by S55 method. According to the color results; the lowest L* value in mussels and shrimp meat was determined in I30 group, the b* value associated with oxidation was found to be highest in mussel meat samples in O22 and in shrimp meat samples in B4 group. The lowest water activity value was found in mussel meat in B4 and in shrimp in O22 groups. According to sensory analysis results; the highest overall acceptability score was determined in the thawed in refrigerator in both samples. Consequently, when all the quality parameters were evaluated, it was determined that thawing in the refrigerator and hot water was the best method.

Author(s):  
Liisa Voutila ◽  
Anne Maria Mullen ◽  
Paul Allen ◽  
Declan Troy ◽  
Eero Puolanne

Loose structure and PSE like zones on the lateral surface of porcine semimembranosus muscle have beenobserved by other researchers. However the role of connective tissue in this abnormally loose structure insemimembranosus muscle has not yet been clarified. We collected about 100g samples from 7 loosestructured and 7 normal structured Irish commercial porcine semimembranosus muscles in order tocompare the onset and peak of thermal transition temperature of intramuscular connective tissue betweenthe samples from the two groups. Meat quality parameters, ultimate pH, rough estimate for drip loss,lightness (L), redness (a) yellowness (b) and as well as electrical conductivity and reflectance were alsomeasured on the samples. Four of the samples characterized as normal by visual assessment showed DFDcharacteristic so the statistical analysis was carried out both including and excluding those samples. Inboth cases the onset (p<0.001; 56.94ºC vs. 59.82ºC) and peak (p<0.001; 62.59ºC vs. 64.06ºC) of thermaltransition temperature were significantly lower in loose structured meat than in normal structured meat.Also reflectance% was lower (p<0.01; 45.18% vs. 69.17%) and the colour lighter (higher L value; p<0.01;55.05 vs. 45.52) and more yellow (higher b value; p<0.001; 18.27 vs. 14.78) in loose structured meat thanin normal structured meat when the DFD like samples were excluded. These results indicate that loosestructure in porcine semimembranosus muscle could be attributed in part to connective tissue propertiespossibly in conjunction with PSE effects.


Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3445
Author(s):  
Olaf K. Horbańczuk ◽  
Artur Jóźwik ◽  
Jarosław Wyrwisz ◽  
Joanna Marchewka ◽  
Agnieszka Wierzbicka

The aim of this study was to evaluate the effect of the packaging system type on the physical characteristics and microbial changes in ostrich meat during refrigerated storage. The applied packaging systems were vacuum packaging (VP) and modified atmosphere packaging (MAP) using two combinations of gases: MAP1 (40% O2/40% CO2/20% N2) and MAP2 (60% O2/30% CO2/10% N2). Eight meat samples were obtained in three replicates for all parameters, except for pH, for which six replicates were obtained from the M. ilifibularis (IF) muscle, and were stored in a refrigerator at 2 °C and analyzed at 0, 4, 8, 12 and 16 days for the effect of packaging methods on physical meat quality. The initial pH (5.99) decreased at the end of the storage time for MAP1 to 5.81, whereas VP was stable from day 0 to 12 and increased up to 6.08 on day 16. Regarding meat color, the L* value increased during storage for MAP1 and MAP2 from 36.99 to 40.75 and 41.60, respectively, whereas it declined for VP to 34.22. The same tendencies were reported for redness (a*) and yellowness (b*). Drip loss was the lowest in MAP1 and highest in VP. The lowest total viable bacteria counts were identified in VP, as compared to MAP1 and MAP2.


2021 ◽  
Vol 12 ◽  
Author(s):  
Elena Bartkiene ◽  
Vadims Bartkevics ◽  
Iveta Pugajeva ◽  
Anastasija Borisova ◽  
Egle Zokaityte ◽  
...  

During plant-based drinks production a significant amount of valuable by-products (BPs) is obtained. The valorization of BPs is beneficial for both the environment and the food industry. The direct incorporation of the fermented and/or ultrasonicated almond, coconut, and oat drinks production BPs in other food products, such as wheat bread (WB) could lead to the better nutritional value as well as quality of WB. Therefore, in this study, various quantities (5, 10, 15, and 20%) of differently treated [ultrasonicated (37 kHz) or fermented with Lacticaseibacillus casei LUHS210] almond, coconut, and oat drinks preparation BPs were used in wheat bread (WB) formulations. Microbiological and other quality parameters (acidity, color, specific volume, porosity, moisture content, overall acceptability) as well as bread texture hardness during the storage and acrylamide content in the WB were evaluated. Among the fermented samples, 12-h-fermented almond and oat, as well as 24-h-fermented coconut drinks preparation BPs (pH values of 2.94, 2.41, and 4.50, respectively; total enterobacteria and mold/yeast were not found) were selected for WB production. In most cases, the dough and bread quality parameters were significantly (p ≤ 0.05) influenced by the BPs used, the treatment of the BPs, and the quantity of the BPs. The highest overall acceptability of the WB prepared with 20% fermented almond drink preparation by-product (AP), 15% fermented oat drink preparation by-product (OP), and 15% ultrasonicated OP was established. After 96 h of storage, the lowest hardness (on average, 1.2 mJ) of the breads prepared with 5% fermented AP, coconut drink preparation by-product (CP), and OP and ultrasonicated CP was found. The lowest content of acrylamide in the WB prepared with OP was found (on average, 14.7 μg/kg). Finally, 15% fermented OP could be safely used for WB preparation because the prepared bread showed high overall acceptability, as well as low acrylamide content.


2021 ◽  
Vol 38 (1) ◽  
pp. 153-159
Author(s):  
O. O. Eniolorunda ◽  
E. S. Apata ◽  
B. B. Badejo ◽  
A. O. Okubanjo

Twenty Yankasa rams aged between 10 and 12 months with average weight of 12.15kg were used to evaluate the effect of different levels of biscuit waste and Leucaena leucocephala meal inclusion in diets on the quality of their meat samples. The rams were randomly assigned to five treatment diets of 0%, 25%, 50%, 75% an d100% of combined biscuit waste and Leucaena leucocephala in replacement for combined maize and wheat offals or B0, B1, B2, B3 and B4 diets with four rams per diet for 91 days. Data were collected on physical, chemical and sensory variables of meat samples. The results showed that there were significant (P<0.05) differences in the cooking loss, water holding capacity, crude protein and overall acceptability of meat samples from the rams. All the parameters measured were better in meat samples from rams fed treatment diets B1 (25%) and B2 (50%) inclusion of biscuit waste and Leucaena leucocephala meal. The results revealed that feeding biscuit waste to Yankasa rams can improve the quality as well as the consumer acceptability of Yankasa rams meat (mutton).


Foods ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 2501
Author(s):  
Elena Bartkiene ◽  
Ieva Jomantaite ◽  
Ernestas Mockus ◽  
Romas Ruibys ◽  
Aldona Baltusnikiene ◽  
...  

The aim of this study was to evaluate the contribution of extruded and fermented wheat bran (WBex-f) to the quality of wheat bread (BR), including the volatile compounds (VC) profile and VC relationship with emotions induced for consumers. A comparison study of BR (prepared with 5%, 10%, and 15% untreated wheat bran (nWB) and WBex-f) quality parameters was performed. It was established that nWB increases dough hardness and reduces BR specific volume. The addition of 5% and 10% of WBex-f was not significant on BR porosity and led to the formation of a high number of large pores. nWB and WBex-f increases the mass loss of BR after baking (by 13.38%), and the control breads showed the highest crust darkness, yellowness, and redness. nWB and WBex-f reduces BR firmness during storage, and WBex-f increases the overall acceptability (OA) of BR (by 26.2%). A strong positive correlation was found between OA and the emotion ‘happy’ (r = 0.8696). In BR prepared with WBex-f, a higher content of pyrazine, methyl-; pyrazine, 2-ethyl-; pyrazine, 2-ethyl-6-methyl-; furfural; ethanone, 1-(2-furanyl)-; benzaldehyde; and 3-furanmethanol was found. Finally, it can be stated that WBex-f could prolong the shelf life of BR and leads to the formation of a specific VC profile, which is associated with a higher OA of the product.


1970 ◽  
Vol 38 (1-2) ◽  
pp. 92-101
Author(s):  
R Islam ◽  
MM Hossain ◽  
S Akhter ◽  
MA Malek

123456The study was conducted to investigate the effect of curing on the quality of beef and buffen and also to find out the relationship between the quality of beef and buffen with their storage time. Six treatments of which three from beef were taken as dry salt cured beef (A), dry sugar cured beef (A), brine cured beef (A) and three from buffen as dry salt cured buffen (A), dry sugar cured buffen (A) and brine cured buffen (A). These samples were cured at room temperature for 10 days and then dried. The dried sample was stored for 120 days and analyzed on first day, 30th day, 60th day and 120th day. The quality of cured meat samples were studied by chemical analysis. All the samples were acceptable up to the end of the storage time. Dry matter, ash, crude protein and ether extract of all the samples decreased gradually with elapse of storage time. The initial (0 day) dry matter, ash, crude protein and ether extract content of the samples were ranged from 98.00-99.10%, 13.07-15.33%, 75.01-81.07% and 3.70-5.50%, respectively and at the end of 120 days of storage the dry matter, ash, crude protein and ether extract content of the samples ranged from 89.50-90.50%, 12.80-14.802%, 73.68-74.97% and 3.35-4.25%, respectively. Statistical analysis indicated that with the elapse of storage time quality parameters of meat samples decreased significantly (P<0.01). Quality parameters also varied among the samples. A significant difference exists in species when considering the value of fat. The relationship between the quality of beef and buffen shows that dry matter and crude protein are highly significant (P<0.01), ether extract is significant (P<0.05) and ash was statistically not significant with their storage times. Although the values are non significant, the loss of protein was lower in brine cured meat than other sample. It may be concluded that, brine curing could be a useful technique for beef and buffen preservation. DOI: http://dx.doi.org/10.3329/bjas.v38i1-2.9917 BJAS 2009; 38(1-2): 92-101


2017 ◽  
Vol 1 (1) ◽  
pp. 65-73
Author(s):  
Saddam Hossain Ruman Khan ◽  
Md Salahuddin ◽  
Md Rezwanul Habib ◽  
Md Mostain Billah ◽  
Md Abu Haris Miah ◽  
...  

This study was undertaken to assess the effects of gamma irradiation (0, 1.5, 2, 4 kGy) on shelf life and meat quality of Black Bengal goat. About 3 kg of fresh Black Bengal goat meat samples were taken and divided into four groups like T1 (non-irradiated, control), T2 (irradiated, 1.5 KGy), T3 (irradiated, 2.0 KGy) and T4 (irradiated, 4.0 KGy). Irradiated and non-irradiated meat samples were stored at refrigeration temperature to elucidate the storage effect. One way ANOVA was performed to investigate the effects of gamma irradiation on different groups. Significant differences were found in color and overall acceptability compared to non-irradiated group and only overall acceptability significantly decreased with increasing storage. No significant differences were observed in flavor, tenderness and juiciness between non-irradiated and irradiated groups. Irradiation influenced color and overall acceptability of chevon. Dry matter content was found higher in 4 KGy irradiated group and increased gradually in day intervals. Cooking loss, free fatty acid, peroxide value and thiobarbituric acid-reactive substances indicated 1.5 KGy irradiation rated best. Microbial findings revealed that 2 KGy irradiated group is better due to safe level of microbial loads which increase shelf life of Black Bengal goat meat. Finally, it may be concluded that 1.5 and 2 KGy doses gamma irradiation in Bengal goat meat enhances sensory attributes, physico-chemical and microbial levels found satisfactory. Asian Australas. J. Food Saf. Secur. 2017, 1 (1), 65-73


2016 ◽  
Vol 10 (2) ◽  
pp. 80
Author(s):  
U.D. Chavan ◽  
J.V. Patil ◽  
M.S. Shinde

Sorghum grains are mostly used for the roti preparation. The M 35-1 (Maldhandi) a sorghum cultivar is known for its good quality of roti due to having pearly white grain color, its flour having higher water holding capacity, and good organoleptic taste. However, this cultivar is low yielder. To evolve sorghum high yielding genotype coupled with this good roti qualities, systematic breeding program was planned and executed to overcome this problem. Twenty local land races, 92 genotypes, and seven improved cultivars of sorghum along with check M 35-1 were studied for various nutritional quality parameters, with special reference to the roti quality. Considering nutritional quality and organoleptic evaluation parameters studied for roti quality, the local land races viz., RSLG 428-1, RSLG 1238, RSLG 1275 and the genotypes viz., RSV 290, RSV 292, RSV 858, RSV 859, RSV 861, RSV 868, RSV 894, RSV 985, RSV 992, RSV 995, RSV 999 were found to be promising for protein, sugar, water absorption, and soluble protein content. Therefore, they can be used for further improvement in nutritional quality through breeding program. Among the improved cultivars, Phule Vasudha (RSV 423), CSV 22, and Phule Chitra (SPV 1546) were<br />found to be most promising for roti quality. The maximum score for overall acceptability was found for Phule Vasudha followed by Phule Anuradha (RSV 458), Phule Yeshoda (RSLG 262), and Phule Maulee (CSV 216).


2018 ◽  
Vol 18 (2) ◽  
pp. 557-574
Author(s):  
Bulent Ekiz ◽  
Alper Yilmaz ◽  
Hulya Yalcintan ◽  
Akin Yakan ◽  
Ismail Yilmaz ◽  
...  

Abstract Carcass and meat quality of male and female Anatolian water buffaloes were investigated using 10 carcasses from each gender. Gender had no influence on carcass characteristics, except warm carcass weight, which was 13% higher in males compared to females. Meat from male water buffaloes had higher ultimate pH and lightness (L*), but lower redness (a*) values than females. Meat samples aged for 21 days had lower values for expressed juice, cooking loss and Warner Bratzler shear force compared with those of 7-day aged ones. Meat samples aged for 21 days had higher L* value at 1 h and 24 h after cutting, a* value at 1 h after cutting compared with those of 7-day aged meat samples. Gender had no effect on meat sensory characteristics. Meat from male water buffaloes had higher proportions of C14:0, C18:3 n-3, C20:2 n-6, C20:3 n-3 and C20:4 n-6 and Σn-3 fatty acids and lower Σn-6/Σn-3 ratio compared with female water buffaloes.


2022 ◽  
Vol 1048 ◽  
pp. 531-537
Author(s):  
Chi Khang Van ◽  
Van Thinh Pham ◽  
Nguyen Phu Thuong Nhan ◽  
Nguyen Hong Khoi Nguyen ◽  
Manh Khong Nguyen ◽  
...  

Quality of minimally processed jackfruit bulb was evaluated during storage at different storage times, temperatures, and types of packaging. The jackfruit pulps were first dried at 45 °C, stored in polypropylene plastics, zipper bags and plastic boxes. Quality parameters were evaluated every 5 days and based on phytochemical changes such as vitamin C, polyphenol, and antioxidant activity. Results revealed that polypropylene plastics were the best packaging product for retention of vitamin C content (5.837 mg/100g) antioxidant activity (7.458%) and phenolic compounds (2526.603mg/100g) after 30 days of storage. Figures for plastic boxes were 5.641 mg/100g, 5.249% and 2361.657 mg/100g, respectively. Similarly, zipper bags were 5.32 mg/100g, 5.895 % and 2173.867 mg/100g respectively. Sensory evaluation in terms of taste, color, texture, and overall acceptability showed that polypropylene packaging gave favorable scores and the products were highly accepted by trained evaluators.


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