Protein Digestibility and Amino Acid Content of Malaysian Local Egg Protein Prepared by Different Methods

Msarah, Marwan; Alsier, Ahmed

doi:10.26480/ees.01.2018.07.09

Cited by 10 publications

(8 citation statements)

References 7 publications

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“…Similar to the present findings, EAAs accounted for about 46-47%, while TAAAs accounted for about 11% of the TAAs; arginine was the most copious amino acid, followed by glutamic acid and lysine [1,4]. Differences in the ratios of the amino acids of eggs from various sources could be due to the strains/breeds of layers and poultry species [5,6,39], dietary composition, cooking method, storage time, environment, [11,40,41] and egg parts [12,42,43].…”

Section: Amino Acids Ratiossupporting

confidence: 85%

“…Eggs were also found to be a rich source of antioxidants [4,9] with the amino acid cysteine having the potential as an antioxidant amino acid, and the combination of strong, weak, and non-antioxidant amino acids increase the antioxidant capacity [9,10]. Besides, the amino acid content of eggs was found to be affected by poultry breeds [5] and species [6], preparation method [11,12] and components (whole, albumen, and yolk) of an egg [13]. The literature review indicates that there is room to improve the nutritional values of eggs by breeds and dietary and management practices due to the differences found in amino acids and antioxidant profiles of table eggs [1,5,6].…”

Section: Introductionmentioning

confidence: 99%

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Protein and Amino Acid Content in Four Brands of Commercial Table Eggs in Retail Markets in Relation to Human Requirements

Attia

Al‐Harthi

Korish

et al. 2020

Animals

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Considering the common believe that all eggs in the retail market are nutritionally similar, four different commercial sources of eggs (A, B, C, and D) available in a retail market were collected to investigate the crude protein and amino acid content, as well as the protein quality in the whole edible part of eggs (albumen + yolk), egg albumen, and egg yolk, separately. Five egg samples per source were collected four times during the experimental period, which resulted in a total number of 20 samples that were pooled to finally present five samples per source of eggs. The results show that crude protein in albumen was significantly higher in A and B than that of C and D, but the difference was found among edible parts of eggs such as yolk > whole edible part > albumen. Essential amino acids (arginine, histidine, isoleucine, lysine, methionine, methionine + cysteine, phenylalanine, phenylalanine + tyrosine, threonine, and valine) of eggs significantly differed according to the source of eggs, but eggs from different sources could provide from 17.4–26.7% of recommended daily allowance (RDA) of amino acids for adults. Essential amino acids (EAAs) were higher (p ≤ 0.05) in eggs from sources A and B than in source D, while source C exhibited intermediate values. Source B had greater (p ≤ 0.05) non-essential amino acids (NEAAs) than did sources C and D in whole edible egg, while source A displayed intermediate values. The phenylalanine + tyrosine, histidine, and lysine were the 1st, 2nd, and 3rd limiting amino acids in all sources of eggs. In conclusion, the investigated eggs showed different EAAs/NEAAs ratio and antioxidant amino acids, indicating a potential for enhancing nutritional values and extending the shelf life of eggs by different nutritional additions.

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Section: Amino Acids Ratiossupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Protein and Amino Acid Content in Four Brands of Commercial Table Eggs in Retail Markets in Relation to Human Requirements

Attia

Al‐Harthi

Korish

et al. 2020

Animals

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“…The regression provides an empirical basis for estimatingthe Langmuir maximum CH4 adsorption capacity from TOC content in a shale reservoir.A similar correlation between gas sorption capacity and TOC content at 30°C and 6 MPa pressure has been observed in previous studies (Chalmers and Bustin, 2007a,b;Bustin, 2007, 2009;Zhang et al, 2012;Msarah and Alsier, 2018).…”

Section: Methane Adsorptionsupporting

confidence: 66%

Influence of black shale composition on methane adsorption and gas content: Implications for gas storage in the Longmaxi black shales

et al. 2018

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The influence of shale composition on methane adsorption capability and gas content is investigated using 14 samples from Well YS8 in the southern Sichuan Basin, China. The results show that the Langmuir adsorption capacity of the Longmaxi shale is mainly a function of the total organic carbon (TOC) content. When TOC is ~1.1%, 50% CH4 is adsorbed onto the surface of the organic matter. The mineral content has limited control on the adsorption capacity of the Longmaxi shales. Organic matter is also a major control on gas content when TOC content is <1.0%. When TOC is >1.0%, gas content remains constant, indicating that gas preservation is more important than gas generation and rock adsorption capacity. Scatter plots of TOC versus gas content and, Langmuir adsorption capacity shows that when TOC is <2.0%, CH4 occurs both as free and absorbed gas, and CH4 occurs mainly as absorbed gas when TOC is >2.0%. La influencia de la composición de lutitas en la capacidad de absorción del metano y el contenido de gas se analiza en este trabajo a partir de 14 muestras del pozo YS8 en la cuenca de Sichuan, al suroeste de China. Los resultados muestran que la capacidad de absorción Langmuir para las lutitas de Longmaxi es principalmente una función del contenido de Carbono Orgánico Total (TOC, del inglés Total Organic Carbon). Cuando el índice TOC es ~1.1%, el 50 % del CH4 (capacidad máxima de absorción de la función Langmuir) es absorbido por la superficie de materia orgánica. El contenido mineral tiene un control limitado en la capacidad de absorción de las lutitas de Longmaxi. La materia orgánica también tiene un control mayor en el contenido de gas cuando el índice TOC es <1.0 %. Cuando el TOC es >1.0 %, el contenido del gas es constante, lo que indica que la preservación del gas es más importante que la generación del gas, y la capacidad de absorción de la roca. Diagramas de dispersión del TOC frente al contenido de Gas y de la capacidad de absorción Langmuir muestran que el TOC es <2.0 %, que el CH4 se alcanza tanto en gas libre como en gas absorbido y que este ocurre principalmente cuando el gas absorbido tiene un nivel TOC de >2.0 %. Influencia de la composición de lutitas negras en la absorción de metano y el contenido de gas: implicaciones para el almacenamiento de las lutitas negras de Longmaxi ABSTRACT Influence of Black RESUMEN

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“…So the higher the protein content in the fermented residue, the better. In this paper, pulp fermentation residue of corn stalk with alcohol was studied [11,12]. Firstly, the fermentation residue was graded, then the protein content and in vitro digestibility were measured, and the feasibility of corn stalk exfoliation as livestock feed was discussed.…”

Section: Introdutionmentioning

confidence: 99%

Research on Comprehensive Using of Pulp of Corn Stalk Fermentation Residue

2018

Topics in Chemical &Amp; Material Engineering

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Abundant fermentation residue could be produced in the course of alcoholic fermentation from the pulp of the corn stalk. In order to make good use of the residue, classification using of stalks in the corn stalk fermentation residue was studied in this paper, by determining the content of protein and digestion in vitro of the fermentation residue, the possibility of fermentation residue of stalks in corn stalk for making livestock feeding was validated.

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Protein Digestibility and Amino Acid Content of Malaysian Local Egg Protein Prepared by Different Methods

Cited by 10 publications

References 7 publications

Protein and Amino Acid Content in Four Brands of Commercial Table Eggs in Retail Markets in Relation to Human Requirements

Protein and Amino Acid Content in Four Brands of Commercial Table Eggs in Retail Markets in Relation to Human Requirements

Influence of black shale composition on methane adsorption and gas content: Implications for gas storage in the Longmaxi black shales

Research on Comprehensive Using of Pulp of Corn Stalk Fermentation Residue

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