Virtual Conference
Nutrition 2022

Safaa A. Salem

National Organization for Drug Control and Research (NODCAR), Egypt

Title: Evaluation of the Nutritional Value of Bitter and Sweet Lupine Cultivars as Protein Source


Protein flours and concentrates were prepared from two species of bitter and sweet lupine. Chemical composition was determined for flours and protein concentrates, while physical properties were determined including; solubility, also emulsion, foaming, water and oil absorption capacity in the two types of lupine protein concentrate. Non significant differences were found in chemical composition between the two lupine species in both flour and lupine protein concentrate, while higher content in total amino acids was observed in sweet than in bitter lupine protein, on the other hand non significant differences were found in the aforementioned physical parameters. Effect of casein replacement with bitter lupine protein concentrate (BPC) or sweet lupine protein concentrate (SPC) in basal diet on serum protein and liver function of rats was studied using 32 rats which were divided into four groups, each of eight rats as follow; normal control fed on basal diet, negative control fed on low protein basal diet and tested groups I and II fed on basal diet in which casein was replaced with BPC or SPC, feeding period was 28 days. Weight gain, food intake, FER, feces dry weight, and feces nitrogen were for normal control group in values of 85.0g, 3360 g, 0.20, 12.5g and 2.41%, which were higher than tested groups in values of 75.0g, 3320g, 0.18, 11.0g and 2.30% for group I and 79.0g, 3332g, 0.19, 11.30g and 2.32% for group II with non significant differences between the two groups in the above parameters respectively. Also significant decreases were found in protein efficiency ratio, net protein ratio and biological value in the tested groups in values of 1.80, 2.02 and 63.72 for group I and 1.89, 2.11 and 64.67 for group II and 2.03, 2.25 and 70.77 for control group in the three parameters respectively, while true digestibility showed non significant difference among the two rested and control groups in values of 95.3, 95.5 and 94.1%. On the other hand, non significant differences were found in biological evaluation among tested and control groups in serum of rats including; total protein, albumin, AST, ALT, uric acid and creatinine, in values of 7.03g/dl, 3.33g/dl, 40.3 mg/dl, 36.1mg/dl, 0.82 mg/dl and 5.40mg/dl for group I and 7.13g/dl, 3.43g/dl, 43.2mg/dl, 37.4mg/dl, 0.84 mg/dl and 5.42mg/dl for group II and 7.19 g/dl, 3.90g/dl, 44.0 mg/dl, 38.2 mg/dl, 0.88 mg/dl and 5.3mg/dl for normal control group in the above parameters respectively.


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