Phytochemical Screening and Effect of Temperature on Proximate Analysis and Mineral Composition of Zingiber officinale Rosc.
Journal Title: Biotechnology Journal International - Year 2017, Vol 18, Issue 3
Abstract
Aims: To investigate the phytochemical composition and effect of temperature on the proximate and mineral composition of Zingiber officinale. Study Design: Activity directed phytochemical screening, proximate analysis and mineral composition investigation of Z. officinale rhizomes using in vitro methods. Place and Duration of Study: Medicinal Plants Section, Bioresources Development Centre, Ogbomoso, Nigeria between May and November, 2016. Methodology: Fresh rhizome of Z. officinale was milled, extracted with absolute ethanol and screened for phytochemicals. Proximate and mineral analyses were carried out at various temperatures; room temperature (28°C; control), 40, 50 and 60°C. Results: Phytochemicals including; alkaloid, tannins, saponins and cardiacglycosides were present in the rhizomes. The results showed significant (P< 0.05) decrease in the percentage of crude protein (9.53±0.04) at 60°C when compared with room temperature; control (9.62±0.04), increase in crude fiber and ash at 40°C (8.31±0.02 and 6.76±0.02 respectively) and 60°C (8.34±0.03 and 6.77±0.02 respectively) when compared with the control (8.28±0.15 and 6.74±0.01 respectively). The results also showed a significant (P< 0.05) decrease in the percentage of sodium (0.057±0.001 and 0.061±0.001) at 40 and 60°C respectively when compared with the control (0.064±0.002); potassium (1.65±0.01) at 40°C when compared with the control (1.73±0.02); magnesium and calcium at 40°C (0.197±0.002 and 0.083±0.001 respectively) when compared with the control (0.203±0.005 and 0.087±0.001 respectively). Conclusion: The current study showed that drying at above room temperature does not affect the proximate and mineral composition of Z. officinale rhizomes. The presence of nutrients and phytochemicals in Z. officinale could be exploited for the overall well-being of man.
Authors and Affiliations
Ebele J. Ajagun, Jane A. Angalapele, Priscillia N. Nwaiwu, Mutiu A. Alabi, Joy A. Oladimeji-Salami, Uduak Amba
Keywords
Related Articles
- EP ID EP315055
- DOI 10.9734/BJI/2017/33999
- Views 122
- Downloads 0
Purification and Partial Characterization of -Galactosidase from Cajanus cajans (Pigeon Pea)
Aims: This study reported the purification and partial characterization of the enzyme β-galactosidase (EC 3:2: 1: 23) from the seeds of Cajanus cajans. Methodology: The dry seeds of Cajanus cajans were purchased at Shom...
Optimisation of Growth Factors for Effective Use of Phosphate Solubilizing Bacterial Strains and Its Use as Bioinoculants for the Growth of Groundnut (Arachis hypogaea) Plant
Phosphorus (P) is one of the essential macronutrients for plant growth. Phosphate solubilizing bacteria (PSB) are organisms which are used as bioinoculants to enhance the plant growth. Plants take phosphate in the form o...
Essential Oil Constituents from the Fruit of Alpinia menghaiensis
The chemical composition of volatiles from the fruits of Alpinia menghaiensis S. Q. Tong & Y. M. Xia (Zingiberaceae) has been studied. The essential oils were obtained by hydrodistillation in a Clevenger-type apparatus a...
Molecular Markers and Postulation Study of Leaf Rust Resistance Genes in Various Egyptian Wheat Cultivars
The current investigation was carried out at seedling stage under greenhouse condition to: (1) postulate leaf rust resistance genes in ten Egyptian spring wheat cultivars at seedling stage and (2) Verify the presence of...
Isolation and Biochemical Characterization of Anaerobic Bacteria Strains from Discarded Ruminal Contents of Nigerian Breed Cattle and Preliminary Evaluation of Its Suitability for Animal Feedstuff
Aim: The study aimed at isolation and preliminary characterization of anaerobic bacteria from a special crossbreed of Muturu and N’Dama cattle found in parts of Nigeria. Study Design: The work investigated the suitabili...