scholarly journals Evaluation of the meat traits of lambs of polish native breeds

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Piotr Janiszewski ◽  
Eugenia Grześkowiak ◽  
Dariusz Lisiak ◽  
Bronisław Borys ◽  
Karol Borzuta ◽  
...  
Keyword(s):  
Chemical Composition ◽  
High Variability ◽  
Quality Traits ◽  
Meat Tenderness ◽  
Longissimus Lumborum ◽  
Chemical Traits ◽  
Physical And Chemical ◽  
Intramuscular Fat Content ◽  
General Estimation

AbstractThe research was performed on 136 male lambs at slaughter weight from mean 32 to 42 kg of the following Polish native breeds: Uhruska (UHR), Pomorska (POM), Czarnogłówka (CZGŁ), Cakiel Podhalański (CKP), Wrzosówka (WRZOS), Świniarka (SWIN), Wielkopolska (WLP) and Polish Merino old type (MST). The longissimus lumborum muscle was tested to establish it’s basic chemical composition, physical and chemical traits as well as sensory traits. The meat quality of tested breeds was high especially in terms of sensory traits. However high variability of studied traits was observed depending on the breed e.g. the average pH24 ranged between 5.58 (WLP) and 5.77 (WRZOS), intramuscular fat content ranged between 1.98% (CZGŁ) and 4.12% (WLP), meat tenderness varied from 4.2 points (POM) to 4.64 points (UHR). Somewhat dark meat colour was observed in all breeds which is worth noticing (L* from 34.86 to 38.50). According to the general estimation of tested quality traits the following breeds were on the top of the ranking: SWIN, UHR, WLP and WRZOS. Further down in the ranking the following breeds were placed: POM, MST and CKP.

scholarly journals The Nutritional Components of Rice are Closely Related to Grain Quality Traits in Rice

2020 ◽  
Vol 11 (2) ◽  
pp. 239
Author(s):  
Bo Peng ◽  
Ke-Xin Jin ◽  
Dian-Ya Luo ◽  
Xia-Yu Tian ◽  
Yan-Fang Sun ◽  
...  
Keyword(s):  
Grain Quality ◽  
Decisive Role ◽  
Mineral Elements ◽  
Rice Grain ◽  
Quality Traits ◽  
Rice Quality ◽  
New Varieties ◽  
Physical And Chemical ◽  
The Relationship

Starch, protein and lipid are the most important nutrients in rice, and their composition and content in rice grains play a decisive role in the grain quality. Rice quality (including appearance quality, cooking quality, nutrition quality, grinding and processing quality, etc.) is not only affected by the composition of the nutrients in grain of rice, but also by the physical and chemical characteristics and their content in grains, but also vulnerable to external environmental conditions. To clarify the relationship between the main nutrients in rice and their grain quality traits is of great theoretical significance and potential application value for the continuous improvement of rice quality in the future. Therefore, this paper reviewed the effects of starch, protein, lipid and mineral elements in grain of rice and also on quality of trait in rice. It is also discussed the relationship between these nutrients and rice grain quality traits. All of those will provide important information for the quality of grain improvement and breeding of new varieties with high quality in rice.

scholarly journals Meat quality of Limousin young bulls slaughtered at 6, 9 and 12 months of age

2017 ◽  
pp. 792 ◽  
Author(s):  
Grażyna Czyżak- Runowska ◽  
Bożena Grześ ◽  
Edward Pospiech ◽  
Jolanta Komisarek ◽  
Monika Okulicz ◽  
...  
Keyword(s):  
Shear Force ◽  
Glycogen Content ◽  
Intramuscular Fat ◽  
Fat Content ◽  
Post Mortem ◽  
Potential Value ◽  
Glycolytic Potential ◽  
Longissimus Lumborum ◽  
Intramuscular Fat Content

The aim of this study was to compare the quality of meat of the young Limousin bulls slaughtered at the age of 6, 9 and 12 months, with particular regard to the residual glycogen content in the meat and the value of the glycolytic potential. The study was conducted on bovine longissimus lumborum muscle. The residual glycogen content, glycolytic potential value (96 h post-mortem), pH value (45 min, 24 h, 48 h and 96 h post-mortem), IMP/ATP index (45 min post-mortem), colour parameters (L*, a* and b*), natural and cooking losses, free water content, the chemical composition, sensory parameters (aroma, flavour, juiciness and tenderness) as well as instrumental tenderness based on cutting test (96 h post-mortem) were analysed. The slaughter age of bulls had significant (p<0.05) effect on following meat parameters: concentration of glycogen, glycolytic potential value, lightness (L*) and redness (a*), shear force value, intramuscular fat content and sensory evaluation of aroma, flavour, juiciness and tenderness.  The longissimus lumborum muscle from young bulls slaughtered at the age of 6 months had significantly (p<0.05) lower values for glycogen concentration, glycolytic potential and intramuscular fat content when compared to animals slaughtered at the age of 12 months. Moreover, the colour of the examined muscle from the youngest bulls was characterised by the highest L* value and the lowest a* value as well as the lowest shear force value when compared to the meat of older bulls slaughtered at the age of 9 and 12 months.

Growth, carcass characteristics and meat quality of Chinese indigenous Yanan pig crossbred with Duroc and Berkshire genotypes

2019 ◽  
Vol 59 (6) ◽  
pp. 1147 ◽  
Author(s):  
Yan Chen ◽  
Yingying Wei ◽  
Jianning Chen ◽  
Daojun Lv ◽  
Peining Li ◽  
...  
Keyword(s):  
Meat Quality ◽  
Carcass Characteristics ◽  
Essential Amino Acids ◽  
Production Performance ◽  
Total Production ◽  
Acid Ratio ◽  
Longissimus Lumborum ◽  
Water Holding ◽  
Intramuscular Fat Content

The objective of the present study was to evaluate the effects of crossbreeding on the growth, carcass characteristics and meat quality of Chinese native Yanan (YN) pig breed and related crossbreeds, including Duroc × Yanan (DY) and Duroc × (Berkshire × Yanan) (DBY). In total, 60 pigs (20 per breed) were used in the study. The results showed that both crossbreeds, especially DBY pigs, exhibited improved growth and carcass characteristics compared with those of purebred YN pigs. Moreover, the two crossbreeds, especially DBY pigs, produced acceptable meat-quality characteristics (normal pH and meat-colour values, high intramuscular fat content and water-holding capacity, acceptable muscle-fibre parameters, and strong pork flavour) similar to those of YN pigs. M. longissimus lumborum contained eight essential amino acids, with high contents in all pigs. C18:1, C16:0, C18:0, and C18:2 were the main fatty acids in M. longissimus lumborum in the three breeds, and a polyunsaturated:saturated fatty acid ratio of ~0.2 was observed in DBY and YN pigs. These results indicated that DBY pigs exhibit an acceptable total production performance and could be extensively used in commercial pig production to provide high-quality niche products.

scholarly journals PHYSICAL AND COMPOSITIONAL CHARACTERISTICS OF CHESTNUT FRUITS

2020 ◽  
Vol 1 (1) ◽  
pp. 51-58
Author(s):  
Sina Cosmulescu ◽  
Ion Trandafir ◽  
Violeta Nour ◽  
Mihai Botu
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
High Variability ◽  
Fresh Matter ◽  
Primary And Secondary Metabolites ◽  
Positive Effects ◽  
Variation Range ◽  
The Individual ◽  
Physical And Chemical ◽  
Wide Variation Range

The objective of this study was investigationofphysical and compositional fruits characteristics of six chestnut cultivars. The fruits belonging to these cultivars were subjected to physical and chemical composition determinations, and the obtained results were comparatively analysed. It can be noticed that there are significant differences between cultivars for all the analysed traits. A high variability was found between cultivars in terms of nutrients content. The moisture content of chestnuts analysed in this study ranged from 51.63% to 58.42%. The protein content recorded values between 5.40 and 7.18% fresh matter. The polyphenols content in cultivars taken under analysis was between 1.65 and 19.60 mg GAE/g, which is a very large variation range between different cultivars. The obtained values of antioxidant activity of chestnuts are high, ranging from 0.73 to 9.90 mg Trolox/g of fresh substance, revealing also a wide variation range. Among the individual phenolic compounds, elagic and gallic acids were determined in higher amounts. The results of this study have shown that chestnut fruits contain significant concentrations of primary and secondary metabolites that are known for their positive effects on human health.

scholarly journals Influence of high pressure and papain treatment on some aspects of beef meat quality

2004 ◽  
Vol 22 (SI - Chem. Reactions in Foods V) ◽  
pp. S299-S302 ◽  
Author(s):  
N. Schenková ◽  
M. Šikulová ◽  
J. Jeleníková ◽  
P. Pipek ◽  
M. Marek ◽  
...  
Keyword(s):  
High Pressure ◽  
Microbial Quality ◽  
Pressure Treatment ◽  
Meat Tenderness ◽  
Chemical Parameters ◽  
Beef Meat ◽  
Physico Chemical ◽  
Longissimus Lumborum ◽  
Water Holding

Influence of post-rigor injection of papain solution and/or high pressure treatment (100, 200, 300 MPa for 10 min) on the quality of beef meat (musculus longissimus lumborum et thoracis) was studied in terms of texture, microbial quality and some physico-chemical parameters (pH, drip loss, water holding capacity). Injection of papain and pressurisation to 100 MPa led to a significant increase of meat tenderness. Application of higher pressures did not lead to further tenderisation. After the 300 MPa pressure treatment the total flora of pressurised compared to untreated samples decreased of 2.5 log cycles.

scholarly journals Effect of harvest at different times of day on the physical and chemical characteristics of vegetable-type soybean

2012 ◽  
Vol 32 (2) ◽  
pp. 351-356 ◽  
Author(s):  
Andréia Cristina Santana ◽  
Mercedes Concórdia Carrão-Panizzi ◽  
José Marcos Gontijo Mandarino ◽  
Rodrigo Santos Leite ◽  
Josemeyre Bonifácio da Silva ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Chemical Composition ◽  
Phytic Acid ◽  
Chemical Constituents ◽  
Chemical Characteristics ◽  
Phytic Acid Content ◽  
Lower Protein ◽  
Physical And Chemical ◽  
Lower Protein Content

The objective of this study was to evaluate the effect of harvest at different times of day on the chemical and physical characteristics of vegetable-type soybean BRS 267 cultivar, harvested at the R6 stage (seed development) and to compare it with that on the grains harvested at the R8 stage (maturation). The pods of the BRS 267 cultivar were harvested at the R6 stage (at 8:00 AM, 12:00 AM, and 6:00 PM), the color parameters were evaluated, and the grains were analyzed for chemical composition, activity inhibitor trypsin, phytic acid content, starch, sugars, fatty acids, and isoflavones. No differences were observed among the different harvest times in terms of the chemical constituents of vegetable-type soybean BRS 267 cultivar harvested at the R6 stage. Isoflavones content did not change with different harvest times, and the aglycone forms (daidzein, glycitein, and genistein) were found in smaller quantities at the R6 stage compared to the R8 stage. The color of the pods of soybean BRS 267 cultivar, harvested at the R6 stage did not change with different harvest times. The grains harvested at the R6 stage had lower protein content, phytic acid, and sucrose and higher levels of lipids, carbohydrates, starch, glucose, fructose, stachyose, and linolenic acids than those collected at the R8 stage. The different times of harvest did not affect the quality of the vegetable-type soybean BRS 267 cultivar harvested at stage R6. Nevertheless, it is recommended to harvest in the morning, when the temperature is milder, like other vegetables, to facilitate and optimize its marketing and in natura consumption.

scholarly journals Association of RYR1 and MYOG Genotype with Carcass and Meat Quality Traits in Grower-finisher Pigs

2010 ◽  
Vol 79 (2) ◽  
pp. 243-248
Author(s):  
Artur Rybarczyk ◽  
Arkadiusz Pietruszka ◽  
Eugenia Jacyno ◽  
Josef Dvořák ◽  
Tadeusz Karamucki ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Meat Quality ◽  
Water Soluble ◽  
Quality Traits ◽  
Soluble Protein Content ◽  
Large White ◽  
Meat Quality Traits ◽  
Water Soluble Protein ◽  
Water Holding ◽  
Intramuscular Fat Content

The study involved 110 hybrid grower-finisher pigs from Polish Large White x Polish Landrace sows sired by Pietrain breed boars and their crossbreds with the 990 line and Duroc. The aim of the study was to determine an association of the polymorphism of RYR1, myogenin (MYOG) genes and carcass meatiness level with carcass slaughter value and meat quality traits in hybrid pigs. Better meat quality was found in pigs of CC genotype at locus RYR1 than in those of CT genotype, with a similar carcass slaughter value and meat chemical composition. No significant differences were found in meat traits (carcass slaughter value) and quality between AA and AB genotypes at locus MYOG. Similarly, no significant differences were found between carcass meatiness ranges adopted in meat quality and its chemical composition, except for water holding capacity, which was higher in pigs with ⪬ 54% meatiness than in those with > 54%. Moreover, interaction was found between carcass meatiness range and RYR1 genotype in relation to backfat thickness and intramuscular fat content, as well as a connection between carcass meatiness range and MYOG genotype in relation to water-soluble protein content. The results indicate the need to continue selection work towards the elimination of allele T RYR1 gene’s in pedigree herds to improve meat quality in fatteners.

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