Selection of cowpea genotypes based on grain mineral and total protein content

Gerrano, Abe Shegro; Rensburg, W.S. Jansen van; Venter, S.L.; Shargie, Nemera; Amelework, Beyene; Shimelis, Hussein; Labuschagne, Maryke

doi:10.1080/09064710.2018.1520290

Cited by 42 publications

(53 citation statements)

References 30 publications

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“…In this study, the distribution of micronutrients in cowpea seed also differed markedly among the genotypes studied, with a range of 45.1 to 67.0 µg.g −1 for Fe, 33.9 to 69.2 µg.g −1 for Zn, 10.1 to 17.4 µg.g −1 for Mn, 14.7 to 21.4 µg.g −1 for B, and 5.2 to 8.1 µg.g −1 for Cu ( Table 2). The strong variation in cowpea micronutrient distribution found in this study is consistent with a report by Gerrano et al (2019). Furthermore, we found that the cowpea genotypes with higher micronutrient accumulation, recorded much greater concentrations in leaves than seed.…”

Section: Trace Element Density In Cowpea Leaves and Seedssupporting

confidence: 93%

“…The observed anomaly in the relationship between percent N derived from fixation and leaf protein concentration in cowpea genotypes appears to depend on the traffic and pathways of symbiotic N transported to leaves from N 2 -fixing bacteroids in root nodules, and the subsequent incorporation of fixed-N into protein. The variation in seed protein found among the cowpea genotypes tested in this study is consistent with a recent report by Gerrano et al (2019).…”

Section: Leaf and Seed Protein Of Cowpea Genotypessupporting

confidence: 93%

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Evaluation of Protein and Micronutrient Levels in Edible Cowpea (Vigna Unguiculata L. Walp.) Leaves and Seeds

Dakora

Belane

2019

Front. Sustain. Food Syst.

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Cowpea is the most important seed legume in Africa. Its leaves and seed are consumed to meet the dietary requirements of protein and micronutrient in rural African communities. In this study, leaf protein of 32 cowpea genotypes was 23-40% at Taung (South Africa), 28-40% at Wa and 24-35% at Manga (Ghana). Seed protein level was also up to 40% in landrace Bengpla and more than 30% in nine other genotypes planted at Taung. Trace elements in cowpea leaves showed markedly high concentrations of Fe (2,011 in cowpea seed differed among genotypes, and ranged from 45.1 to 67.0 µg.g −1 for Fe, 33.9 to 69.2 µg.g −1 for Zn, 10.1 to 17.4 µg.g −1 for Mn, 14.7 to 21.4 µg.g −1 for B, and 5.2 to 8.1 µg.g −1 for Cu. Genotypes Apagbaala, Fahari, Iron Gray, and Line 2020, respectively, exhibited 34.2-, 34.0-, 22.5-, and 18.3-fold higher Fe concentration in leaves than seed, and 3.5-, 2.0-, 2.0-, and 3.5-fold greater Zn in leaves than seed (in that order). The genotypes that accumulated significantly high levels of protein and trace elements in cowpea leaves and seed, were generally high N 2 -fixers, thus suggesting a link between N 2 fixation and cowpea's ability to synthesize protein and accumulate nutrient elements in leaves and seed. Therefore, identifying cowpea genotypes that can enhance protein accumulation and micronutrient density in edible leaves and seed through breeding has the potential to overcome protein-calorie malnutrition and trace element deficiency in rural Africa.

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Section: Trace Element Density In Cowpea Leaves and Seedssupporting

confidence: 93%

Section: Leaf and Seed Protein Of Cowpea Genotypessupporting

confidence: 93%

Evaluation of Protein and Micronutrient Levels in Edible Cowpea (Vigna Unguiculata L. Walp.) Leaves and Seeds

Dakora

Belane

2019

Front. Sustain. Food Syst.

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“…Moreover, there are positive relations among Fe, Mn, Zn, and Cu, and a positive correlation is found between Mn and Ca. Cowpea genotypes were dried with the microwave by Gerrano et al (). They determined that Cu, Fe, and Mg were also elevated with increased K. In their study, they also found positive correlations between Mg and Mn as well as between P and Na or Zn.…”

Section: Resultsmentioning

confidence: 99%

“…The reason for this is because the N content, that is, the protein constituents, is found in the fruit flesh and seed rather than in the peel (Norfezah, Hardacre, & Brennan, 2011). Gerrano et al (2018) stated that Ca has an essential role in protein synthesis and thus N, which is an essential building element of the protein, also increases with the increase of Ca. Due to the similar chemical properties, the increase in P also showed an increase in Zn (Walker, Miller, & Hassett, 1977).…”

Section: Nutrients Of Apple Peelsmentioning

confidence: 99%

Drying kinetics and quality characteristics of green apple peel ( Mallus communis L. var. “Granny Smith”) used in herbal tea production

Alibas

Zia

Yilmaz

et al. 2019

J Food Process Preserv

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Green apple peels, (25.06 ± 0.06 g) with the moisture content of 3.05 ± 0.02 [kg (moisture) kg–1 (dry matter)], were dried using two dehydration methods, microwave, and natural drying until moisture content of apple peels was reduced to 0.092 ± 0.001 [kg (moisture) kg–1 (dry matter)]. Microwave drying periods at 1,000, 800, 600, and 400 W lasted for 17, 21, 27, and 33 min, respectively; whereas, natural drying lasted for 66 hr. The scope of this study, a comparison of measurements of moisture with that of the predicted results was made, obtained from 21 thin layer drying models. For both 600 and 800 W microwave drying, Modified Henderson and Pabis's model; whereas, at 1,000 W, Alibas's model, and at 400 W, Modified Jena and Das's model were considered to be the most appropriate models. The most suitable drying process according to color parameters, chlorophyll content, and nutrients was obtained at 400 W microwave drying. Practical applications The herbal tea industry is growing globally and it is constanrly looking for new flavors that can attact consumers' attention. Herbal teas, in addition to being delicious, are required to meet the daily nutritional needs of the consumers. One of the drawbacks of drying is the loss of aroma and nutrients, moreover, drying operations carried out in open fields, such as sun drying, leads to contamination and can cause more harm than benefit. Thus, for food safety, it is very essential for herbal tea production facilities to use appropiriate methods to produce high‐quality products. The present study on drying of apple peels for herbal tea contains important data on the selection of the most suitable drying method for the preservation of nutrients.

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“…Results in this current study revealed that water-stress did not have any significant effect on the concentration of the following mineral elements; calcium (Ca), copper (Cu), iron (Fe), potassium (K), magnesium (Mg), manganese (Mn), sodium (Na), phosphorus (P), zinc (Zn), Chromium (Cr), and Selenium (Se). However, (Gerrano et al, 2018) in a similar study reported that differential irrigation treatments significantly affected concentrations of Nitrogen, Calcium, Magnesium, Copper, Bromine, and Iron in the field grown cowpea seeds and under field conditions. These differences may be due to genotypic differences in cowpea, environmental condition, and or laboratory procedures/protocols used for the study.…”

Section: Discussionmentioning

confidence: 86%

Evaluation of nutritional and phytochemical variability of cowpea Recombinant Inbred Lines under contrasting soil moisture conditions in the Guinea and Sudan Savanna Agro-ecologies

Alidu

Asante

Mensah

2020

Heliyon

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A B S T R A C TPlant breeders' efforts in developing drought tolerant and high-yielding cowpea varieties may be in vain unless the developed varieties are evaluated to ascertain the influence of water stress on their nutritive value, antioxidants, and phenolic contents under contrasting moisture regimes. The study was set up to evaluate the nutritional value, phytochemical content and antioxidant activity of cowpea Recombinant Inbred Lines (RILs) under contrasting soil moisture in the Guinea and Sudan Savanna agro-ecologies of Ghana. Forty-eight cowpea RILs seed samples from well-watered and water stress experiment were pulverized. Distillation and titration was carried out and the organic samples extracted and various biochemical analyses were carried out using standard protocols and methodologies. The dried grain mineral contents were determined using an Atomic Absorption Spectrophotometer, while the protein content was determined by the combustion method. Correlation and regression analysis and principal component analysis were performed using STATA version 13. Biochemical analysis for seed related traits revealed that inbred lines responded differently to drought. Significant differences of watering regimes on various phytochemical traits were only observed in phosphorus and lead. Inbred line with family number 57 had the highest crude protein content of 46.90% under well-watered conditions. Inbred line 84 under water stress conditions had high levels of Mg and K. Inbred line 20 under well-watered conditions had the highest antioxidant content. For phenolic acid content, inbred line 255 scored the highest. Quercetin and rutin were most abundant in inbred line 186 for both water-stress and well-watered conditions. The indication is that moisture stress could affect seed yield but no effects on the phytochemical and nutritional variables. Genotypic differences could arise from parental combination used for developing the inbred lines for the study.

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Selection of cowpea genotypes based on grain mineral and total protein content

Cited by 42 publications

References 30 publications

Evaluation of Protein and Micronutrient Levels in Edible Cowpea (Vigna Unguiculata L. Walp.) Leaves and Seeds

Evaluation of Protein and Micronutrient Levels in Edible Cowpea (Vigna Unguiculata L. Walp.) Leaves and Seeds

Drying kinetics and quality characteristics of green apple peel ( Mallus communis L. var. “Granny Smith”) used in herbal tea production

Evaluation of nutritional and phytochemical variability of cowpea Recombinant Inbred Lines under contrasting soil moisture conditions in the Guinea and Sudan Savanna Agro-ecologies

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