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Chăn nuôi

Nguyễn Duy Hoan, Đoàn Văn Đạt(1)

ảnh hưởng của thời gian bảo quản và đun sôi đến hàm lượng và thành phần axit béo trong trứng gà thường và trứng gà giàu omega3

Effect of storage and boiling time on the content of fatty acid composition in normal and Omega 3 enriched egg

Khoa học Kỹ thuật Chăn nuôi

2015

4

91-97

1859-476X

Total 236 eggs were purchased from four farms (1 normal production farms and 3 omega 3 enriched egg production farms). Conduct analysis to compare the content and composition of fatty acids between the normal egg and the omega 3 enriched egg. 126 eggs were used to conducted storage period of 6 weeks(63 eggs each of type) and 72 eggs (36 eggs each) boiled in 3 levels: 5; 10 and 15 minutes to study the effect of storage and boiled time on the composition of 3 essential fatty acid LNA, ARA and DHA. Both the two experiments were repeated 3 times. Results of the study are as follows: Average weight of Omega 3 enriched eggs that have selling on the market was 58.8 grams, 3.3 percent higher than the normal eggs. The content of saturated fatty acids in omega 3 enriched eggs are generally lower than the normal eggs, whereas the content of polyunsaturated fatty acids is higher, especially the content of omega 3 fatty acid in omega 3 enriched eggs reached 15.2 percent higher than 6.02 times the normal eggs. In general, boiled from 5 to 15 min did not affect on the content of the LNA, DHA and ARA fatty acids in both normal and omega 3 enriched eggs. However prolonged boiling over 10 minutes increased the proportion of ARA in normal eggs and reduced of LNA in omega 3 rich eggs, also have a negative impact on the rate of n-6 / n-3. Store in the refrigerator for a maximum period of 4 weeks did not affect on content of LNA, DHA and ARA fatty acids in both of 2 types of egg. However, prolonged storage period to 6 weeks the average loss ratio of 3 fatty acids up to 33.5 percent for the normal eggs and 15.6 percent for the omega 3 enriched eggs.

TTKHCNQG, CVv345