Comparison on Amino Acids and Fatty Acids Nutritive Value and Texture Characteristics in Duck Fatty Liver and Goose Fatty Liver

QIN Pengfei, WANG Baowei, ZHANG Fujun, LI Chengying, GE Wenhua, ZHANG Ming, YUE Bin

doi:10.3969/j.issn.1006-267x.2018.12.023

2018 , Vol. 30 >Issue 12: 4954 - 4963

DOI: https://doi.org/10.3969/j.issn.1006-267x.2018.12.023

Molecular Nutrition

Comparison on Amino Acids and Fatty Acids Nutritive Value and Texture Characteristics in Duck Fatty Liver and Goose Fatty Liver

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1. College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China;
2. National Waterfowl Industrial Technology System Nutrition and Feed Function Laboratory, Qingdao 266109, China;
3. Jilin Zhengfang Grouping & Husbandry Stock Company Limited, Changchun 130012, China

Received date: 2018-05-01

Online published: 2018-12-19

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Abstract

This study was conducted to compare the difference of amino acids and fatty acids nutritive value and texture characteristics in duck fatty liver and goose fatty liver through analyzing and evaluating the basic nutrient composition, amino acids and fatty acids in duck fatty liver and goose fatty liver. The fatty livers were selected from the goose and duck overfeeding period lasted for 28 and 14 days, respectively. The difference of nutritive values of duck fatty liver and goose fatty liver were tested by using amino acid analyzer, gas chromatograph and so on. The results showed as follows: 1) the contents of moisture and crude lipid in duck fatty liver were significantly lower than those in goose fatty liver (P<0.01), and the contents of crude ash and crude protein were significantly higher than those in goose fatty liver (P<0.01). 2) The amino acid types of duck fat liver and goose fatty liver were the same, tryptophan was not detected, the other amino acids (except cysteine and proline) contents had significant differences between duck fat liver and goose fatty liver (P<0.05 or P<0.01). The essential amino acid index (EAAI) of duck fat liver and goose fatty liver were 64.34 and 60.25, respectively. The amino acid ratio coefficient score (SRC) of duck fat liver and goose fatty liver protein were 73.34 and 47.11, respectively. The ratio of the taste amino acids in goose fatty liver was higher than that in duck fat liver, the content of therapeutic amino acids in duck fat liver was higher than that in goose fat liver. 3) The contents of unsaturated fatty acids and saturated fatty acids were 61.70% and 39.31% in goose fat liver, the contents of unsaturated fatty acids and saturated fatty acids were 59.11% and 41.25% in duck fatty liver. The ratio of saturated fatty acid, monounsaturated fatty acid and polyunsaturated fatty acid in goose fatty liver was 5.53:7.69:1.00, the nutritive value of fatty acids in goose fatty liver was better than duck fatty liver. 4) The contents of chromium, copper, iron and phosphorus in duck fatty liver were significantly higher than those in goose fatty liver (P<0.01), the content of calcium in goose fatty liver was significantly higher than that in duck fatty liver (P<0.01). 5) The hardness of duck fatty liver was significantly higher than that of goose fatty liver (P<0.01), the adhesiveness of duck fatty liver was significantly lower than that of goose fatty liver (P<0.01). In conclusion, the nutritive value of amino acids in duck fat liver is higher than goose fatty liver, the nutritive value of fatty acids in goose fatty liver is higher than duck fat liver. Goose fatty liver has better tenderness, duck fat liver has high hardness.

Key words： duck fat liver; goose fatty liver; amino acids; fatty acids; texture characteristics; evaluate

Cite this article

QIN Pengfei, WANG Baowei, ZHANG Fujun, LI Chengying, GE Wenhua, ZHANG Ming, YUE Bin . Comparison on Amino Acids and Fatty Acids Nutritive Value and Texture Characteristics in Duck Fatty Liver and Goose Fatty Liver[J]. Chinese Journal of Animal Nutrition, 2018 , 30(12) : 4954 -4963 . DOI: 10.3969/j.issn.1006-267x.2018.12.023

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