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Comparative study of chemical, sensory and microbal attributes of fried and cooked marinades of silver carp (Hypophthalmichthys molitrix) during storage at 4°C Texto completo
2016
Hedayatifard, Masoud | Kavousi, Seyede Atefeh | Khavarpour, Maryam
BACKGROUND: The term ‘‘marinated fish’’ is used to define semi-preserved fish made by immersion in a solution of organic acids or vinegar and salt. Objectives: This study was conducted to compare nutritional value (Lipid, Protein, Moisture, Ash, pH), chemical (TVB-N, PV, TBA, FFA) and sensory attributes, microbial communities (TC, Mold) and fatty acids profile of cooked and fried marinades and 30 days storage at 4°C. Methods: The marinades were produced using formulas from Silver carp fresh fillets. Then the products were stored at 4°C and sampling was done to determine of quality indexes during storage, every 10 days. Results: The results showed that there were no differences in moisture, protein and lipid contents between two products (p>0.05). Also, there were no differences with regard to PV, TBA and FFA between two marinades (p>0.05), but TVB-N in cooked and fried products (with 16.46 and 18.91 mg/100g) showed significant changes (p<0.05). In addition, total bacteria count was 4.19 and 4.89 and total mold-yeast was 2.47 and 2.60 Logcfu/g at day 30 in cooked and fried marinades, respectively (p<0.05). As sensory aspect, appearance, color, texture and odour attributes showed better points in fried marinade, cooked product had more acceptable taste (p<0.05). However, there was no difference in overall acceptance. Omega-3, omega-6 and EPA+DHA fatty acids had higher amounts in fried marinade (p<0.05). Cooking reduced the UFA amount, but conversely, frying increased it. Conclusions: Quality of both marinades was acceptable during 30 days storage refrigerator, but fried marinade showed a preferred quality as sensory attribute.
Mostrar más [+] Menos [-]Numbers of Sertoli cells, quantitative rates of sperm production, and the efficiency of spermatogenesis in relation to the daily sperm output and seminal quality of young beef bulls.
1989
Berndtson W.E. | Igboeli G.
Data from 34 yearling Hereford or Angus bulls were used to investigate relationships of testicular size, quantitative rates of sperm production, Sertoli cell numbers, numbers of germ cells supported per Sertoli cell, and the efficiency of spermatogenesis to daily sperm output and seminal quality. Two ejaculates were collected by electroejaculation from each bull on each of 2 days/week throughout the study. The percentage of progressively motile sperm and the percentage of morphologically normal sperm were determined from aliquots of fresh semen. Additional aliquots of semen were frozen in glass ampules or plastic straws and subsequently evaluated for postthaw motility and percentage of sperm with intact acrosomes. Sertoli cell numbers, the numbers of germcells per Sertoli cell, and the efficiency of spermatogenesis were unrelated to the quality of fresh or frozen semen (P greater than 0.05). In first ejaculates, the numbers of sperm and motile sperm were related (P less than 0.05) to testicular parenchymal weight (r = 0.38, and 0.50), daily sperm production (r = 0.45 and 0.53), and spermatids per gram of testicular parenchyma (r = 0.35 and 0.34). Testicular parenchymal weight and daily sperm production also were related to daily sperm output and to the average daily motile sperm output of these bulls (P less than 0.05), but could account for less than 25% of the variability in these end points among bulls.
Mostrar más [+] Menos [-]Effects of packaging methods on shelf life of ratite meats Texto completo
2017
Horbańczuk Olaf K. | Wierzbicka Agnieszka
Effects of packaging methods on shelf life of ratite meats Texto completo
2017
Horbańczuk Olaf K. | Wierzbicka Agnieszka
Over the last years a growing demand for ratite meat, including ostrich, emu, and rhea has been observed in the world. Ratite meat is recognised as a dietetic product because of low level of fat, high share of PUFA, favourable n6/n3 ratio, and higher amounts of iron content in comparison with beef and chicken meat. The abundance of bioactive compounds, e.g. PUFA, makes ratite meat highly susceptible to oxidation processes. Moreover, pH over 6 creates favourable environment for fast microbial growth during storage conditions affecting its shelf life. However, availability of information on ratite meat shelf life among consumers and industry is still limited. Thus, the aim of the present review is to provide current information about the effect of ratite meat packaging type, i.e. air packaging, vacuum packaging with skin pack, modified atmosphere packaging (MAP), on its shelf life quality during storage, including technological and nutritional properties.
Mostrar más [+] Menos [-]Effects of packaging methods on shelf life of ratite meats Texto completo
2017
Horbańczuk, Olaf K. | Wierzbicka, Agnieszka
Over the last years a growing demand for ratite meat, including ostrich, emu, and rhea has been observed in the world. Ratite meat is recognised as a dietetic product because of low level of fat, high share of PUFA, favourable n6/n3 ratio, and higher amounts of iron content in comparison with beef and chicken meat. The abundance of bioactive compounds, e.g. PUFA, makes ratite meat highly susceptible to oxidation processes. Moreover, pH over 6 creates favourable environment for fast microbial growth during storage conditions affecting its shelf life. However, availability of information on ratite meat shelf life among consumers and industry is still limited. Thus, the aim of the present review is to provide current information about the effect of ratite meat packaging type, i.e. air packaging, vacuum packaging with skin pack, modified atmosphere packaging (MAP), on its shelf life quality during storage, including technological and nutritional properties.
Mostrar más [+] Menos [-]Technological and nutritional properties of ostrich, emu, and rhea meat quality Texto completo
2016
Horbańczuk Olaf K. | Wierzbicka Agnieszka
Technological and nutritional properties of ostrich, emu, and rhea meat quality Texto completo
2016
Horbańczuk Olaf K. | Wierzbicka Agnieszka
In recent years a growing demand for ratite meat, including ostrich, emu, and rhea has been observed all over the world. However, consumers as well as the meat industry still have limited and scattered knowledge about this type of meat, especially in the case of emu and rhea. Thus, the aim of the present review is to provide information on technological and nutritional properties of ostrich, emu, and rhea meat, including carcass composition and yields, physicochemical characteristics, and nutritive value. Carcass yields and composition among ratites are comparable, with the exception of higher content of fat in emu. Ostrich, emu, and rhea meat is darker than beef and ratite meat acidification is closer to beef than to poultry. Ratite meat can be recognised as a dietetic product mainly because of its low level of fat, high content of polyunsaturated fatty acids (PUFA), favourable n6/n3 ratio, and high iron content in comparison with beef and chicken meat. Ratite meat is also rich in selenium, copper, vitamin B, and biologically active peptides such as creatine (emu) and anserine (ostrich), and has low content of sodium (ostrich). The abundance of bioactive compounds e.g. PUFA, makes ratite meat highly susceptible to oxidation and requires research concerning elaboration of innovative, intelligent packaging system for protection of nutritional and technological properties of this meat.
Mostrar más [+] Menos [-]Technological and nutritional properties of ostrich, emu, and rhea meat quality Texto completo
2016
Horbańczuk, Olaf K. | Wierzbicka, Agnieszka
In recent years a growing demand for ratite meat, including ostrich, emu, and rhea has been observed all over the world. However, consumers as well as the meat industry still have limited and scattered knowledge about this type of meat, especially in the case of emu and rhea. Thus, the aim of the present review is to provide information on technological and nutritional properties of ostrich, emu, and rhea meat, including carcass composition and yields, physicochemical characteristics, and nutritive value. Carcass yields and composition among ratites are comparable, with the exception of higher content of fat in emu. Ostrich, emu, and rhea meat is darker than beef and ratite meat acidification is closer to beef than to poultry. Ratite meat can be recognised as a dietetic product mainly because of its low level of fat, high content of polyunsaturated fatty acids (PUFA), favourable n6/n3 ratio, and high iron content in comparison with beef and chicken meat. Ratite meat is also rich in selenium, copper, vitamin B, and biologically active peptides such as creatine (emu) and anserine (ostrich), and has low content of sodium (ostrich). The abundance of bioactive compounds e.g. PUFA, makes ratite meat highly susceptible to oxidation and requires research concerning elaboration of innovative, intelligent packaging system for protection of nutritional and technological properties of this meat.
Mostrar más [+] Menos [-]QUALITY EVALUATION OF CHICKEN SAUSAGES FROM SPENT BROILER BREEDER HENS DURING FROZEN STORAGE Texto completo
2023
J. Indumathi | M. Shashikumar | G.V. Bhaskar Reddy | A. Jagadeesh Babu | M. Gnanaprakash
The current study was designed to evaluate the influence of three different ground vegetable oil seeds on various physico-chemical, microbiological and sensory attributes of chicken sausages from spent broiler breeder hen stored under frozen (-18±1°C) condition. Chicken sausages were incorporated with ground poppy, sesame and peanut seeds each at 10 % level separately as three treatments and were analyzed for their keeping quality along with high fat control. The mean values of FFA, TBARS, tyrosine values, standard plate count, psychrophilic count and yeast and moulds counts were significantly (P<0.05) influenced by formulation during frozen storage and values increased significantly (P<0.05) throughout the storage period in all chicken sausages. Chicken sausages with ground sesame scored lowest standard plate counts (5.66 log CFU/g) than any others after 180 days of storage at 18±1°C. Coli forms, lacto bacillus and anaerobic counts could not be detected during entire storage period. Scores for all sensory attributes decreased significantly (P<0.05) during storage in all treatments irrespective of formulation. Study proved that, the three ground vegetable oil seeds were effective by delaying the lipid oxidation, microbial growth and preserving sensory quality during frozen storage and among them ground sesame seed was more potent to be a better preservative.
Mostrar más [+] Menos [-]QUALITY EVALUATION OF CHICKEN SAUSAGES FROM SPENT BROILER BREEDER HENS DURING FROZEN STORAGE Texto completo
2023
J. Indumathi | M. Shashikumar | G.V. Bhaskar Reddy | A. Jagadeesh Babu | M. Gnanaprakash
The current study was designed to evaluate the influence of three different ground vegetable oil seeds on various physico-chemical, microbiological and sensory attributes of chicken sausages from spent broiler breeder hen stored under frozen (-18±1°C) condition. Chicken sausages were incorporated with ground poppy, sesame and peanut seeds each at 10 % level separately as three treatments and were analyzed for their keeping quality along with high fat control. The mean values of FFA, TBARS, tyrosine values, standard plate count, psychrophilic count and yeast and moulds counts were significantly (P<0.05) influenced by formulation during frozen storage and values increased significantly (P<0.05) throughout the storage period in all chicken sausages. Chicken sausages with ground sesame scored lowest standard plate counts (5.66 log CFU/g) than any others after 180 days of storage at 18±1°C. Coli forms, lacto bacillus and anaerobic counts could not be detected during entire storage period. Scores for all sensory attributes decreased significantly (P<0.05) during storage in all treatments irrespective of formulation. Study proved that, the three ground vegetable oil seeds were effective by delaying the lipid oxidation, microbial growth and preserving sensory quality during frozen storage and among them ground sesame seed was more potent to be a better preservative.
Mostrar más [+] Menos [-]Investigation of the Nutritional and Quality Properties of Meatballs Added with Bee Pollen and Apigenin Texto completo
2021
Demi̇r, Tugba | Agaoğlu, Sema
The present study was carried out to investigate the possibility of using different levels of bee pollen and apigenin extract in beef meatballs to evaluate shelf-life, nutritional and quality properties of beef meatballs under different storage conditions. It was determined, using the HPLC method, that bee pollen contains a high level of apigenin under optimal conditions. Bee pollen and apigenin were added to meatballs at different concentrations in five groups. Meatballs were made with control, 1-2% bee pollens/apigenin. Quality and safety evaluation of meatballs were determined by sensory, physicochemical, biochemical and microbiological tests. The analyses were conducted at 1st, 3rd, 7th and 14th days of interval. A statistically significant decrease was found in FFA, POV and TBARS levels of meatballs on different days of storage (p<0.05). When compared to the control group, the bioactive compounds preserved the microbiological and chemical properties of meatballs during frozen storage (14 days).It was concluded that the extracts with 2% bee pollen concentrations can be used as biopreservative agents for meat and meat products.
Mostrar más [+] Menos [-]Minerals and trace elements composition of raw cow’s milk in Peninsular Malaysia Texto completo
2017
Falizah A. | Khairunnisak M. | Chandrawathani P. | Kamaliah G. | Ernah G. | Ketty G. S. L. | Roosnoor Farkhan H. | Saipul Bahari A. R. | Faridah F. I. | Norakmar I. | Marni S. | Izwan I.
This study was conductedon raw cow’s milk collected in seven statesof Malaysia to investigate the compositionof minerals and trace elements in the milk.Raw cow’s milk samples were collectedfrom Kedah, Perak, Johor, Melaka,Pahang, Selangor and Negeri Sembilanfrom January to November 2015. ICPMStechnique combined with microwavedigestion were applied to determine theconcentration of five major minerals (Na,Mg, K, Ca and P) and eleven trace elements(Cr, Mn, Fe, Ni, Cu, Zn, Se, Sr, Mo,Baand Pb) in the milk samples. The resultof analysis showed relatively constantcomposition of minerals and trace elementsin the samples but some variations wereobserved in certain states. Application ofprincipal component analysis (PCA) in thecomposition data showed different clusterexists between the states of Selangor andNegeri Sembilan as well as Kedah andNegeri Sembilan. There is no significantdifference observed in the compositionsof minerals and trace elements betweenother states. The compositions of mineralsand trace elements in raw cow’s milk inMalaysia are comparable with reports fromother research. Further studies can be doneto investigate the source of nutrient, foodor environmental condition that producedthe amounts of minerals and trace elementsin the milk.
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