scholarly journals Influence of water cooking on mineral content of brazilian sweet potato cultivars

2020 ◽  
Vol 9 (1) ◽  
pp. e55911594
Author(s):  
Jaqueline Machado Soares ◽  
Camila Nogueira Espínola ◽  
Mirelly Marques Romeiro Santos ◽  
Valter Aragão do Nascimento ◽  
Daniel Araujo Gonçalves ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Mineral Content ◽  
Water Immersion ◽  
Potato Cultivars ◽  
Sweet Potatoes ◽  
Mineral Contents ◽  
Sodium Potassium ◽  
Influence Of Water ◽  
Calcium Magnesium ◽  
Phosphorus Iron

The objective of the study was to characterize the mineral profile of Brazilian sweet potatoes and to evaluate the influence of cooking by immersion in water on these micronutrients. The cultivars Amorano, Júlia, Valentina, UGA 29, UGA 34, UGA 45, UGA 49, UGA 79, UGA 80 and UGA 81 were investigated. The levels of sodium, potassium, calcium, magnesium, phosphorus, iron, zinc, copper and silicon were quantified in the samples of raw and cooked sweet potatoes, which presented statistical difference between the varieties. The genotypes that stood out were Júlia and UGA 45 with higher mineral contents, while Amorano and UGA 29 were characterized by lower contents. Water immersion cooking reduced sodium, potassium and iron contents for all Brazilian sweet potato cultivars, while Zn, Mn and Cu showed the least changes. It is concluded that cooking in water significantly reduces the mineral content of most Brazilian sweet potato cultivars.

scholarly journals Mineral Composition of Three Popular Wild Mushrooms from Poland

Molecules ◽  
2020 ◽  
Vol 25 (16) ◽  
pp. 3588
Author(s):  
Michalina Gałgowska ◽  
Renata Pietrzak-Fiećko
Keyword(s):  
Mineral Content ◽  
Absorption Spectrometry ◽  
Wild Mushrooms ◽  
Sodium Potassium ◽  
Flame Atomic Absorption ◽  
Copper Manganese ◽  
North Eastern ◽  
Calcium Magnesium ◽  
Copper Zinc ◽  
Sodium And Potassium

The region of Warmia and Mazury is characterized by the special diversity and richness of its natural environment, including large forest complexes, where wild mushrooms are commonly collected and consumed. This study aimed to examine the differences in mineral content (calcium, magnesium, sodium, potassium, iron, zinc, copper, manganese) of three species of mushrooms collected in north-eastern Poland. The research material consisted of dried samples of king bolete (Boletus edulis), bay bolete (Boletus badius), and chanterelle (Cantharellus cibarius) collected in the region of Warmia and Mazury. The content of the above-mentioned elements in mushroom fruit bodies was determined using the flame atomic absorption spectrometry (acetylene-air flame) and the emission technique (acetylene-air flame) for sodium and potassium. For the majority of micro- and macroelements, the studies confirmed the presence of significant differences in their content, depending on the species of fungi. The studied mushrooms cover a significant percentage of daily demand for many of the minerals. This concerns mainly copper, zinc, and potassium, although none of the species was a good source of calcium and sodium. Among the analyzed mushrooms, chanterelle is the best source of most minerals.

696. The chemical composition of the colostrum and milk of the ewe

1958 ◽  
Vol 25 (1) ◽  
pp. 70-74 ◽  
Author(s):  
Dawn R. Perrin
Keyword(s):  
Chemical Composition ◽  
Mineral Content ◽  
High Protein ◽  
Sodium Potassium ◽  
Milk Samples ◽  
Calcium Magnesium ◽  
Very High ◽  
Mineral Constituents

1. The composition of the milk of six low-plane and six high-plane ewes has been studied. Definite lactational trends have been observed for all the major constituents.2. For all the ewes the initial colostrum was characterized by very high protein and fat contents and by low lactose content.3. Analyses of the mineral constituents—calcium, magnesium, sodium, potassium, phosphorus, and chloride—are reported covering the whole lactation of twelve sheep. The colostrum of the low-plane animals was higher in total mineral content than that of the high-plane animals.The author wishes to thank Mr L. J. Lambourne for providing the milk samples and Mr J. E. Allen for the spectographic analyses.

scholarly journals Effect of Germination on the Physicochemical and Antinutritionnal Parameters of White Beans (Phaseolus vulgaris L.) Seeds Cultivated in Côte d'Ivoire

2021 ◽  
pp. 111-121
Author(s):  
Jacques Mankambou Gnanwa ◽  
Jean Bedel Fagbohoun ◽  
Anon Attoh Hyacinthe ◽  
Edmond Dué Ahipo
Keyword(s):  
Phaseolus Vulgaris ◽  
Antinutritional Factors ◽  
Phaseolus Vulgaris L ◽  
Mineral Contents ◽  
Sodium Potassium ◽  
Total Sugars ◽  
Mean Values ◽  
White Bean ◽  
Sprouted Seeds ◽  
Calcium Magnesium

The objective of the present study was to evaluate some physicochemical and some antinutritional factors characteristics of sprouted seeds of white bean (Phaseolus vulgaris L.) with a view to their valorization in the Ivorian diet. The contents of dry matter, ash, reducing sugars, total sugars, fat, increased significantly under the effect of the germination of bean seeds. In addition, the mineral contents (Calcium, Magnesium, Iron, Sodium, Potassium) of sprouted bean samples are statistically different from those of ungerminated beans. Then, it was found that germination resulted in a significant increase in the contents of vitamins (A, B1, C, D and E). However, a significant decrease in the anti-nutritive compounds such alkaloid, oxalates, phytates and tannins was observed in the sprouted bean seeds. The mean values range from 45.00 ± 3.54 to 16.25 ± 1.28; from 68.29 ± 0.71 to 21.32 ± 0.18; from 81.72 ± 2.48 to 38.14 ± 1.76 and from 51.58 ± 0.26 to 19.35 ± 0.53 per cent respectively. Thus, germination is an effective processing method for increasing vitamins and mineral bioavailability, and for reducing significantly anti-nutritve compounds after the bean seeds germinate.

scholarly journals Analysis of the Proximate Composition, Anti-Nutrients and Mineral Content of Maerua Crassifolia Leaves

2020 ◽  
Vol 27 (1) ◽  
pp. 89-96
Author(s):  
U.I. Aletan ◽  
H.A. Kwazo
Keyword(s):  
Proximate Composition ◽  
Crude Protein ◽  
Mineral Content ◽  
Absorption Spectrometry ◽  
Proximate Analysis ◽  
Crude Protein Content ◽  
Good Source ◽  
Mineral Contents ◽  
Sodium Potassium ◽  
Lethal Doses

This study was carried out to determine the proximate composition, anti-nutrient and the mineral content of Maerua crassifolia leaves. Proximate analysis was performed using standard AOAC methods, mineral contents were determined using atomic absorption spectrometry while the anti-nutrients were analysed using standard methods. The results revealed that the leaves had moisture content of 62.00 %, ash content of 12.17± 0.47 g/100 g and crude protein content of 15.17 ± 0.02 g/100 g. The value of the minerals ranged between 75.33 ± 0.05 mg/kg for potassium and 2.88 mg/kg for magnesium. For the heavy metals, zinc had the highest value of 0.22 ± 0.02 μg/mg. The sodium: potassium ratio was calculated to be 0.92 ±0.00. All the anti-nutrients studied were below the lethal doses recommended. The results obtained indicate that the leaf will be a good source of nourishment if properly utilized. Keywords: proximate composition, mineral content, anti-nutrients, Maerua crassifolia

scholarly journals Analysis of chemical compounds’ content in different varieties of carrots, including qualification and quantification of sugars, organic acids, minerals, and bioactive compounds by UPLC

2021 ◽  
Author(s):  
Emel Yusuf ◽  
Karolina Tkacz ◽  
Igor Piotr Turkiewicz ◽  
Aneta Wojdyło ◽  
Paulina Nowicka
Keyword(s):  
Organic Acids ◽  
Organic Acid ◽  
Mineral Content ◽  
Chemical Properties ◽  
Titratable Acidity ◽  
Total Polyphenols ◽  
Sodium Potassium ◽  
Calcium Magnesium ◽  
Anti Oxidant ◽  
Calcium Iron

AbstractTwelve carrot varieties in different colours and sizes were investigated for chemical properties (dry matter, ash, pectins, titratable acidity, and pH), contents of vitamin C, sugar, organic acids, mineral (sodium, potassium, calcium, iron, and magnesium), and anti-oxidant activities (ABTS, FRAP, and ORAC). Moreover, total polyphenolics and total tetraterpenoids of colourful carrot varieties were presented. According to the study, sucrose was the dominant sugar and isocitric acid was the most common organic acid in carrot samples. In the case of mineral content, potassium, sodium, calcium, magnesium, and iron were identified, while copper was not identified in carrots. Additionally, most of the analyzed carrots were a good source of pectins (average—1.3%), except for mini-orange carrot. Purple-coloured carrot samples demonstrated the highest results for total sugar (11.2 g/100 g fm), total organic acid (2.8 g/100 g fm), total polyphenolic contents (224.4 mg/100 g fm), and anti-oxidant activities (17.1 mmol Trolox equivalents/100 g dm). In turn, the lowest results were observed in normal yellow carrot for total polyphenols (7.3 mg/100 g fm), and anti-oxidant activities (2.5 mmol Trolox equivalents/100 g dm); besides, the lowest total tetraterpenoids were determined in micro-white carrot—0.2 mg/100 g fm.

Preference for Color, Sweetness, and Mouthfeel of Sweet Potato in Puerto Rico

1969 ◽  
Vol 69 (1) ◽  
pp. 99-106
Author(s):  
F. W. Martin ◽  
E. J. Rodríguez-Sosa
Keyword(s):  
Puerto Rico ◽  
Sweet Potato ◽  
Potato Cultivars ◽  
The Other ◽  
Preference Ranking ◽  
Sweet Potatoes ◽  
Cultural Affiliation ◽  
Trained Panel ◽  
Sex Attitudes ◽  
Orange Color

The color, softness, mouthfeel, and sweetness of six different sweet potato cultivars were rated by a trained panel. These sweet potatoes were then served to 52 untrained panelists who rated them for flavor and appearance. Panelists also expressed attitudes about their preference regarding color, sweetness, flavor, and mouthfeel. Preference ranking for flavor was closely related to sweetness, and for appearance to orange color. There were differences in preference according to cultural affiliation and sex. Attitudes of panelists were not related to their choice of sweet potatoes except in the case of color. There appear to be two poles of preference, one for the orange, sweet, moist, and the other for the light, less sweet, dry type of sweet potato.

scholarly journals Nutritive Profile and Provitamin A Value of Sweet Potatoes Flours (Ipomoea batatas Lam) Consumed in Côte d’Ivoire

2018 ◽  
Vol 7 (5) ◽  
pp. 36 ◽  
Author(s):  
Gisele Koua ◽  
Thierry Zoue ◽  
Rose-Monde Megnanou ◽  
Sebastien Niamke
Keyword(s):  
Antioxidant Activity ◽  
Sweet Potato ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Potato Cultivars ◽  
Sweet Potatoes ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
Antinutritive Factors ◽  
Β Carotene

Sweet potato is an important food security crop in Sub-Saharan Africa. In Côte d’Ivoire, the roots are widely consumed as supplementary staple food or secondary food. The present study is conducted to highlight the nutritive composition, antinutrients and β-carotene contents of local sweet potatoes consumed in Côte d’Ivoire. The nutritive properties and antinutritive factors of these sweet potatoes were investigated using standard methods. Results confirmed the energetic value (363±1.63-374.08±0.56 kcal/100 g DM) of whole sweet potato flour, mainly due to its high carbohydrate content (86.75±0.40%-90.87±0.12%). Whole flour recorded low contents of moisture (4.50±0.10-6.30±0.15%), lipids (0.63±0.08-1.94±0.95%) and proteins (0.94±0.36-1.91±0.15%). The antinutritive factors ranged from 55.84±0.13 to 70.52±0.07 mg/100 g DM and 52.30±5.81-92.44±11.10 mg/100 g DM for oxalates and phytates, respectively. The mineral contents were: magnesium (49.37±1.09-540.87±0.82 mg/100 g DM), calcium (50.28±1.14-110.53±0.79 mg/100 g DM), phosphorus (25.12±1.04-42.75±0.82 mg/100 g DM), potassium (906.25±0.33-1625±0.61 mg/100 g DM), and iron (5.62±0.84-26.89±0.76 mg/100 g DM). The sweet potato flours highlighted polyphenols and antioxidant activity varying from 92.80±98.20±1.72 to 224.46±0.86 mg GAE /100 g DM, and 31.03±0.52-58.63±0.60%, respectively. While β-carotene levels of flours varied from 0.19±0.08 to 22.71±0.67 µg/g DM for white to orange cultivars. At the whole, the orange fleshed sweet potato cultivars recorded an appreciable amount of minerals (magnesium, iron and calcium), polyphenols and greater antioxidant activity. This indicates that these sweet potato cultivars may present a potential asset for their using as natural antioxidants to prevent chronic diseases and undernourishment caused mineral deficiency. The results also showed that the orange-fleshed varieties may contribute for vitamin A deficiencies alleviation in children of rural areas of Côte d’Ivoire.

scholarly journals Evaluation of the chemical, physical and nutritional composition and sensory acceptability of different sweet potato cultivars

2019 ◽  
Vol 40 (3) ◽  
pp. 1127 ◽  
Author(s):  
Ana Flávia de Oliveira ◽  
Jaqueline Machado Soares ◽  
Érica Caroline da Silva ◽  
Paulo Sergio Loubet Filho ◽  
Camila Jordão Candido ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Titratable Acidity ◽  
Nutritional Composition ◽  
Potato Cultivars ◽  
Soluble Solids ◽  
Human Consumption ◽  
White Pulp ◽  
Sweet Potatoes ◽  
Total Soluble Solids ◽  
Sensory Acceptability

The aim of the study was to evaluate the chemical, physical and nutritional composition and sensory acceptability of different sweet potato cultivars to classify the best genotypes for human consumption. We evaluated ten genotypes extracted from the Germplasm bank of Midwest State University, Brazil. The cultivars were evaluated regarding their sensory acceptability and chemical (reducing sugar; nonreducing sugar; total sugar; pH; total soluble solids; titratable acidity; total soluble solids/titratable acidity ratio; and instrumental colour) and nutritional composition (moisture; ash; protein; lipid; carbohydrate; energy value; total carotenoid; and ascorbic acid). Greater scores (p < 0.05) for overall acceptance were obtained for the white pulp genotypes Amorano, Júlia, UGA 45, and UGA 49. There was a statistical difference (p < 0.05) in the chemical and nutritional composition of sweet potatoes, except for the pH values. Generally, tuber have a light colour (values of L* greater than 50) with a yellow shade (b*) and green subshade (negative a* values). The exception was noticed in the UGA 34 genotype, which presented a higher red shade (positive a* value) and a yellow subshade. The cultivars more indicated for human consumption were the UGA 34 (favorable nutritional profile), UGA 45 (better acceptability and favorable chemical and nutritional composition), and Amorano (better acceptability and favorable chemical composition). On the other hand, the UGA 29 genotype may be characterized as the less appropriated for consumption. That, due to its less acceptance from the consumers and an inferior chemical and nutritional characterization. We conclude that the Brazilian sweet potato cultivars more indicated for human consumption are the UGA 34, UGA 45 and Amorano, considering that present more favorable chemical, nutritional and sensory acceptability characteristics. The UGA 29 genotype may be characterized as less recommended for consumption.

scholarly journals The Structural Resistance’s Anatomy of Sweet Potato Leaves to Fungal Pathogen Sphaceloma batatas

2018 ◽  
Vol 10 (1) ◽  
pp. 131-137 ◽  
Author(s):  
Siti Samiyarsih ◽  
Juwarno Juwarno ◽  
Juni Safitri Muljowati
Keyword(s):  
Sweet Potato ◽  
Research Result ◽  
Potato Cultivars ◽  
Sweet Potatoes ◽  
Potato Plants ◽  
Randomized Design ◽  
Structural Resistance ◽  
Anatomical Characters ◽  
Completely Randomized Design ◽  
Disease Attack

Anatomical characters can be used as instructions to the structural resistance of plants to pathogen attack. Various pathogens attack sweet potato plants, such as the Sphaceloma batatas fungus that causes scurvy disease (scab). The aims of this research t test the structural resistance of sweet potato plants based on leaf anatomical character and intensity of disease attack due to the inoculated of S. batatas. The research was conducted from June to November 2016, using the Completely Randomized Design Experimental (RAL) method with a factorial pattern. The first factor was ten sweet potato cultivars and the second factor was the inoculum of S. batatas fungus each treatment with five replications. The character of leaf anatomy observed was thick of cuticle, thick of mesophyll, size and number of stomata and number of trichomes per 1 mm2 leaf area. Based on the research result, it was concluded that the inoculation of the fungus of S. batatas caused the decrease of stomata length and width on ten sweet potato cultivars. The highest intensity of disease attack was 14.33% and correlated with stomata length (r = 0.49). The anatomical structural resistance to scurvy can be used as a basis for determining crosses for obtaining superior sweet potato cultivars. The benefit of the research is to advise the community to cultivate sweet potatoes that have structural resistance to scurvy, such as cuticle and thick mesophyll, high trichomata density.

scholarly journals The evaluation of selected qualitative parameters of sweet potato (Ipomoea batatas L.) in dependence on its cultivar

10.5219/1036 ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 131-137
Author(s):  
Miroslav Šlosár ◽  
Alžbeta Hegedűsová ◽  
Ondrej Hegedűs ◽  
Ivana Mezeyová ◽  
Ján Farkaš ◽  
...  
Keyword(s):  
Vitamin C ◽  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Field Experiments ◽  
Potato Cultivars ◽  
Soluble Solids ◽  
Sweet Potatoes ◽  
Total Carotenoids ◽  
Total Soluble Solids ◽  
Tuber Flesh

The sweet potato (Ipomoea batatas L.) is relatively known vegetable species, but it is grown only on small area in the Middle European region. Its cultivars are characterized by different colour of tuber flesh which can be white, beige, yellow, orange and purple. The aim of this study was to determine and compare selected qualitative parameters of tubers (total carotenoids, vitamin C and total soluble solids) among orange, white and purple sweet potato cultivars. The field experiments were established at Slovak University of Agriculture in Nitra in 2016 and 2017. Sweet potatoes were grown by hillock system with using of black non-woven textile for soil mulching. The tuber harvest was realised on the 6th October 2016 and 13rd September 2017. The highest content of total carotenoids was found in orange sweet potato cultivars (78.47 - 122.89 mg.kg-1 fresh weight) and its values were multiple-fold higher in comparison with purple (4.22 mg.kg-1 f. w.) and white (10.71 mg.kg-1 f. w.) cultivars. Orange cultivars were also richer source of vitamin C (246.31 - 325.99 mg.kg-1 f. w.) compared to white (179.66 mg.kg-1 f. w.) and purple (187.75 mg.kg-1 f. w.) cultivars of sweet potatoes. The total soluble solids, expressing mainly sugar content, was higher in purple (10.13 °BRIX) cultivar of sweet potatoes, followed by cultivars with orange (8.52 - 9.72 °BRIX) and white (5.57 °BRIX) tuber flesh. Obtained results showed the significant effect of cultivar, characterized by different tuber flesh colour, on the composition and contribution of sweet potatoes for human health. 

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