List of Articles Whey

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  1 - Effect of Whey protein supplementation on GH-1 and IGF-1 in taekwondo Men athletes
  Mobina   Aghajani Abazar  Teymouri Elhamalsadat  Zeinali Alireza   Mohammadi Shadmehr  Mirdar Harijani
  10.61186/jspac.32004.1.2.43
  Background: Improving athletic performance has been one of the issues that athletes have long faced. Hundreds of sports supplements for athletes have been introduced to the market in recent years. The overall aim of the present study was to investigate the interactive e More

  Background: Improving athletic performance has been one of the issues that athletes have long faced. Hundreds of sports supplements for athletes have been introduced to the market in recent years. The overall aim of the present study was to investigate the interactive effect of whey supplementation and resistance training on growth hormone and IGF1 levels in Men athletes. Materials and Methods: The method of the present study was a quasi-experimental and clinical trial. 24 male working bodybuilders (mean age 26.4 ±5.3, height 173.9 ± 7.7, weight 92.3 ± 11.6 and body mass index 28.8 ± 5.4), randomly divided into 2 complementary groups + Practice and practice were divided. Before and after 8 weeks of combined exercise program and whey supplementation (50 grams daily in the supplement group), selected body composition indicators of insulin-like hormone and plasma growth hormone and physical fitness factors including lower and upper limb muscle strength, speed, endurance Upper torso muscle, and agility were assessed. To compare the results before and after supplementation and exercise in each group, paired t-test was used, and to compare the results of the two groups with each other, an independent t-test was used using SPSS software version 20 and the significance level was P≥0.05 was considered. Results: In both groups, after eight weeks of training and consumption of whey protein, the levels of growth hormone and insulin-like growth factor 1, muscle strength, and endurance increased significantly (P <0.05), but in comparison between groups in the post-test, there was a significant difference. Not observed (P <0.05). Conclusion: Whey supplementation probably does not affect growth hormone and insulin-like growth factor-1 levels and fitness factors in Men athletes. Manuscript profile
• Open Access Article
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  2 - Isolation and screening of pectinase producing Aspergillus niger and use of whey to optimize enzyme production
  Mahsa pouya shokoofeh Ghazi Amir Tukmechi
  Aims and Background: Pectinase that can break down pectin in plant cell walls is one of the most important industrial enzymes in the world, which can be isolated from a wide range of microorganisms such as bacteria and fungi. Therefore, considering the importance and ap More

  Aims and Background: Pectinase that can break down pectin in plant cell walls is one of the most important industrial enzymes in the world, which can be isolated from a wide range of microorganisms such as bacteria and fungi. Therefore, considering the importance and applications of this enzyme in food processing, agriculture, the purpose of this research is isolating and screening pectinase-producing fungi from some of rotten fruits and vegetables, as well as optimizing the enzyme production condition. Materials and methods: Isolation and identification of pectinase producing fungi from rotten fruits (peach, plum and apple) and vegetables (onion) were done. Isolation and screening the most capable fungal strains producing pectinase was used by cultivation on specific Pectin Agar medium, staining with lactophenol cotton blue and slide culture method. In order to identify the isolated fungi more accurately, the molecular technique like 18S rRNA sequencing was used. Optimizing the production rate of pectinase enzyme carried out using pectin substrate accompanied by different Lactic Whey and Permeate whey under different temperatures and pH levels, and the activity of enzyme was measured by the standard DNS method. Results: one Aspergillus niger fungus producing pectinase enzyme was isolated from onion. Results for optimization conditions shows that the identified strain, shows an enzyme activity equal to 103/018 (IU/ml) in the presence of permeate whey and pectin substrate, under incubation at 25 C° ,140 rpm, and pH 6.5. While, pectinase production with only pure pectin substrate was lower equal to 92.717 (IU/ml) when incubation at 25 C° , same rpm and pH 7. Conclusions: Potent native fungal strains isolated from our country are suitable candidates for the production of important industrial enzymes such as pectinase. Also using cost effective substrates like Whey can be replaced by expensive pure substrates in production industry for the important enzymes production process. Manuscript profile