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Objective To explore the nutritional efficacy of compound protein powder formulations from different sources. Methods Three groups of compound protein powder formulations were obtained through scientific blending using soy protein, whey protein and yeast protein as raw materials. The effects of the compound protein powders on nitrogen metabolism, serum biochemical indicators, and pathological changes of liver tissue and epididymal fat in rats were evaluated. Results Compared with the control (casein), the net protein utilization, biological evaluation, and protein efficacy ratio of the compound protein powders in rats were significantly improved, and the changes in these indicators in the formula with the highest whey protein content were most significant among all three formulas. The compound protein powders effectively increased the levels of albumin and globulin, while decreased the content of total cholesterol, indicating beneficial effects on improving immunity and controlling lipid metabolism, with the formula group 2 being the most effective among all three groups. The pathological examination showed that the three groups of protein powder did not have adverse effects on liver tissue and epididymal fat. Conclusion The present study demonstrates that the compound protein powder formulation has nutritional value, which suggests a potential of the application of the compound protein powder formulation in the elderly, and people with special nutritional needs, such as sports people.
ABSTRACT
Este trabalho teve como objetivo avaliar o efeito da substituição da farinha e do óleo de peixe pelo concentrado proteico de soja e óleo de soja, na sobrevivência, no crescimento e na composição corporal dos camarões (Litopenaeus vannamei) produzidos em sistema de bioflocos (BFT). Foram formuladas cinco dietas, isoproteicas e isoenergéticas, com diferentes níveis de substituição da farinha e do óleo de peixe por concentrado proteico de soja e óleo de soja, sendo os tratamentos designados como: 0% (sem substituição), 25%, 50%, 75% e 100%. As rações foram elaboradas para conter aproximadamente 35% de proteína e 8% de lipídios. O experimento foi conduzido durante 49 dias, com juvenis com peso inicial de 2,93±0,83g, em sistema de bioflocos (BFT). Não foram encontradas diferenças significativas entre os tratamentos até 75% de substituição para as variáveis de ganho de peso, conversão alimentar e sobrevivência. O tratamento de 100% de substituição apresentou menor taxa de crescimento específico. O presente resultado sugere que, nas dietas para camarões criados em sistema bioflocos, a farinha e o óleo de peixe possam ser substituídos em até 75% por concentrado proteico de soja e óleo de soja, sem prejudicar o desenvolvimento dos animais.(AU)
The objective of this work was to evaluate the effect of the substitution of fishmeal and fish oil with soy protein concentrate and soybean oil on survival, growth and body composition of shrimp (Litopenaeus vannamei) produced in biofloc system (BFT). Five diets were formulated to be isoproteic and isoenergetic with different levels of substitution of fishmeal and fish oil with soy protein concentrate and soybean oil. The treatments were named as: 0% (without substitution), 25%, 50%, 75% and 100%. The diets were formulated to contain approximately 35% protein and 8% lipids. The experiment was conducted for 49 days, with juveniles with initial weight of (2.93±0.83g) in a biofloc system (BFT). No significant differences were found between treatments up to 75% of substitution for the variables of weight gain, feed conversion ratio, and survival. The 100% substitution treatment showed a lower specific growth rate. The present study suggests fish meal and fish oil can be substituted in up to 75% for soy protein concentrate and soybean oil, without harming the development of the shrimps when reared in biofloc system.(AU)
Subject(s)
Animals , Shellfish , Soybean Oil , Penaeidae , Soy Foods , Diet/veterinary , Fish Products , Animal Feed/analysisABSTRACT
Among “food for specified health use” (FOSHU), approximately 100 are indicated in the treatment of life-style related diseases related to hypercholesterolemia; in the present review we describe the safety and effectiveness of several of these foods.<br>
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Though there are different kinds of view on diabetic nutritional therapy for a long time,it is the basic treatment method on diabetes mellitus(DM).With some result of clinical research on diabetic nutritional therapy,people knew it more and more.To discuss new diabetic nutritional therapy is of great benefit to improve the curative effect and prolong the syndrome of DM.
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The nutritive value of different heat processed textured soybean proteins was measured by means of chemical and biologic methods. The experiment was divided into four groups (10 rats, each): (1) High heat treated textured soybean protein group; (2) Low heat treated textured soybean protein group; (3) Casein group; (4) Protein free group. The former three groups contained 10% protein, the latter contained less than 0.56% protein. The preperations were fed to 4 groups of weanling male rats for 4 weeks. The results showed that the body weight increments in the three groups were 146.4,158.1,188.7g; the protein effeciency ratio (PER) 2.17, 2.23, 2.74; the net protein ratio (NPR) 3.52, 3.51, 3.84; the true digestibility 84.5, 83.4, 95.8; the biological value 68.7, 64.6, 68.9 and net protein utilization 58.1, 54.0, and 66.1 respectively.Those results indicated that there was no significant difference between the high and low heat treated textured soybean protein.
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Objective To determine the effect of soybean protein on growth of jejunal mucosa. Method Seventeen goat lambs at 7d of age were randomly allocated into control (casein group, n=9) and experimental group (soybean group, n=8). All lambs were fed milk mixture containing either casein or soybean protein (replaced 30% of casein). The lambs were slaughtered after 5 w and the tissues of jejunum were sampled to determine the villus morphology. The mucosa was collected for analysis of protein, nucleic acid content and the activities of alkaline phosphatase (ALP). Results The soybean administration induced villus atrophy. Protein content of mucosa tend to decrease both in proximal (127.2?4.6 vs 143.6?7.3 mg/g mucosa,P=0.07) and medial jejunum(111.2?6.3 vs 132.7?8.5 mg/g mucosa,P=0.06). In soybean group the activity of AP was lower(P