Hibiscus sabdariffa commonly known as "roselle" is a member of malvaceae family. It is a plant with a worldwide fame and has more than three hundred species which are distributed in tropical and subtropical regions around the world. Many parts of Roselle including seeds, leaves, fruits and roots are used in various foods as well as in herbal medicine. This research work analyzes the nutritional composition of dried Hibiscus sabdariffa leaves and calyces. The moisture content was determined by exposing the sample to heat under controlled conditions, the water from the material evaporated leaving the dry matter. The ash content was determined by burning off the organic matter leaving behind inorganic ash. Base on the principle that non-polar components of samples are easily extracted into organic solvent, crude lipid was determined using n-Hexane. The protein content was obtained by Kjeldahl method. Mineral analysis was also carried out to determine the amount of Potassium, calcium and phosphorus. The result shows that the dried leaves and calyces of Hibiscus sabdariffa contain:
Iron is an essential trace element, required for haemoglobin formation and the oxidative process of living tissues.A comparative study of the determination of iron in iron tablets was carried out using Redox titration on five samples of capsule containing iron. The capsules were analyzed using Redox titration on five of the samples containing iron content inform of ferrous fumarate. The weight of ferrous fumarate Fe (C 4 H 2 O 4 ) as well as elemental Fe 2+ in milligram per gram for each capsule containing ferrous fumarate was determined. The titration was carried out using potassium permanganate (vii) (KMNO 4 ) which is the oxidation agent. The results obtained indicated Chemiron contained 144±4.61 (mg/g) while the label contained 150mg/g, Astyfer contained 74.6±5.69 (mg/g) while the label contained 80mg/g, Ferrobin plus contained 246±2.36 (mg/g) while the label contain 300mg/g, Emivite super contain 102±3.64 (mg/g) while the label contain 100mg/g, and Maxiron 265±1.73 (mg/g) while the label contain 250mg/g. Base on the results for the analysis of all the sample it can be concluded that Maxiron have the highest percentage of iron which is best supplements for adult lacking high percentage of iron. However, Astyfer has the lowest amount of iron which is the best supplement for infants who require very low amount of iron supplements.
Moringa oleifera is one of the green leafy vegetables that are under-exploited and under-utilized. Available researches have shown that Moringa oleifera is rich in nutrients and can be used as a food-based strategy in combating nutrient deficiencies. The study was carried out to comparatively evaluate some nutrient contents of Moringa oleifera processed under different methods. The research analyzes and compares nutritional composition of dried and cooked Moringa oleifera leaves. The moisture content was determined by exposing the sample to heat under controlled conditions, the water from the material evaporated leaving the dry matter. The ash content was determined by burning off the organic matter leaving behind inorganic ash. Base on the principle that non-polar components of samples are easily extracted into organic solvent, crude lipid was determined using n-Hexane. The protein content was obtained by Kjeldahl method. Mineral analysis was also carried out to determine the amount of potassium, magnesium, sodium, calcium and phosphorus The results shows that, the dried leaves of Moringa oleifera and cooked leaves contain: Moisture 3.0% and 5.0%, Ash 13.5% and 10.0%, fibre 8.5% and 10.0%, Crude lipid 5.0% and 7.5%, Crude protein 5.43% and 9.98%, Carbohydrate 62.57% and 59.52% respectively. The mineral content of the leaves (mg/100g): were Sodium (Na) 0.14 and 0.08, potassium (k) 5.10 and 2.60, Calcium (Ca) 0.28 and 0.22, magnesium (Mg) 0.29 and 0.25, phosphorus (P) 5.58 and 4.91 respectively. The results showed that, the cooked leaves of Moringa oleifera contain more nutrients than the dried leaves. However, carbohydrate and mineral composition are lower in the cooked leave. Nutrient loss is a consequence of nearly every cooking process. Exposure to heat, light or oxygen alters the nutrients found in food, and methods that involve water often reduce the amounts of nutrients as these get 'washed out' and left behind.
The Rising energy requirements and atmospheric contaminations by combustion of gases and conventional fuel, has opened avenues for new, safe, effective and more accessible energy sources. Corn is one of the richest sources for the production of ethanol. This research looked the effect of concentration of sulphuric acid on the yield of bio-ethanol produced from the lingocellulosic material corncob which is an alternative over food derived ethanol, consumption of crude oil and environmental pollution. The main objective of this study is to know the best acid concentration to that can used during acid hydrolysis for the production of ethanol from the cellulosic content of corncobs. In this study, different condition was examined as to access their effect for optimum ethanol production. The method used was acid hydrolysis of corncobs with varied acid molarities of 0.4M, 0.6M, 0.8M and 1M. The UV/visible spectrophotometer of 1M H 2 SO 4 has the highest absorbance of 0.447, followed by 0.8M (0.368), 0.6M (0.292) and 0.4M (0.253). The result obtained from the physical parameters measured for each different concentration after fermentation processes of the bio ethanol produced, 1M H 2 SO 4 of the corncobs prepared produced the highest percentage yield (55.5%) of the bio ethanol followed by 0.8M (50.5%), 0.6M (47%) and 0.4M (42%) which was the lowest yield. This has shown that acid hydrolysis at 1M H 2 SO 4 with moderate yeast concentration 3g/20cm 3 at room temperature and atmosphere pressure can be used to improve the production of bio ethanol.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.