Histochemical Analysis and Protein Content of Maize Landraces (Zea mays L.)

2011 ◽  
Vol 10 (3) ◽  
pp. 92-98 ◽  
Author(s):  
Virgilio Gavicho Uarrota ◽  
Eder Carlos Schmidt ◽  
Zenilda Laurita Bouzon ◽  
Marcelo Maraschin
1984 ◽  
Vol 26 (2) ◽  
pp. 214-228
Author(s):  
Marie-Hélène Chevallier ◽  
Yvette Dattee

Isozymes of eight enzymatic systems were determined in 22 maize landraces from Latin America, 27 from Africa, and 1 composite, and were analyzed by multivariate analysis. Efficiency of hybridization in producing the composite was evaluated with enzymatic markers. The composite closely resembled the Mali ecotypes from which 60% of its genetic constitution was derived. Prediction of heterosis in yield as related to enzymatic differences in parents of a hybrid is discussed.Key words: Zea mays L., Latin America, enzyme variability, multivariate analysis, heterosis.


2020 ◽  
Vol 5 (1) ◽  
pp. 32
Author(s):  
Astuti Amin ◽  
Asnita Asnita

In this study made prebiotic from bioconversion of corn flour (Zea mays L.) by yeast Endomycopsis fibuligera as an alternative substitute for antibiotics. In this study, the addition of Na+, K+, Ca2+, and Mg2+ ions aimed to determine the optimum type and concentration of metal in prebiotic and testing the effect of prebiotic compounds produced on broiler weight gain. The analysis carried out included: reducing sugars, α-amylase and glucoamylase enzyme activity, protein content and cell biomass. To determine the existence of a significant effect, the analysis was carried out on broiler body weight given prebiotic compounds which were added to optimum metal ions and which were given prebiotic compounds without the addition of metal ions. The results showed that the addition of optimum metal ions was obtained on Ca2+ ions with a concentration of 0.25%, where the reducing sugar content of 0.600 mg / mL, the activity of the enzyme α-amylase and glucoamylase 0.519 and 0.287 units / mL, protein content 2.724 mg / mL, cell biomass 10.8933 mg / mL, from observations and statistical tests carried out by giving prebotic compounds by adding metal ions and giving prebiotic compounds without adding metal ions influence broiler weight gain with an average weight difference of 261 grams or 15% on day 30.


2021 ◽  
pp. 1-19
Author(s):  
Sarah E. Oas ◽  
Karen R. Adams

Any relative nutritional differences among the diverse maize (Zea mays L.) landraces traditionally maintained in the Greater Southwest are little understood. In this article, we investigate a range of nutritional traits of five indigenous maize landraces in the US Southwest based on different kernel endosperm types: pop, flour, flint, dent, and sweet. We present macronutrient and micronutrient values for accessions of each landrace grown in the same environmental grow-out experiment. Macronutrient values vary considerably across these endosperm accessions. Sweet and flour maize had higher values of fat and protein, whereas dent had the highest carbohydrate content. Sweet and flour maize were comparatively the best sources of micronutrients. Sweet maize yielded the highest values of potassium, thiamin, and magnesium, and flour kernels had the highest riboflavin and niacin content. These results indicate that the maintenance of diverse maize landraces had nutritional as well as ecological, symbolic, and culinary value in both the past and today. Compared to modern commercial maize standards, traditional southwestern maize landraces had a somewhat higher caloric value, many had higher vitamin and mineral content, and all accessions but dent displayed higher protein values. This suggests that southwestern maize-focused diets that included diverse landraces may have been more nutritious than previously understood.


2013 ◽  
Vol 30 (2) ◽  
pp. 614-624 ◽  
Author(s):  
Virgilio Gavicho Uarrota ◽  
Edna Regina Amante ◽  
Ivo Mottin Demiate ◽  
Flavia Vieira ◽  
Ivonne Delgadillo ◽  
...  

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