scholarly journals EFFECT OF PLANT EXTRACTS ON SPORULATION AND SPORE GERMINATION OF STORED MELON SEED FUNGI

Author(s):  
Amadi E. ◽  
Deleke E. ◽  
Olahan G. ◽  
Garuba T. ◽  
Adebola M.O.

Frequently, stored melon seeds fail to preserve to their time of use. Storage fungi invade these seeds and cause their deterioration. A study was, therefore, carried out to determine the effect of guava (Psidiumguajava L.) leaf and ginger (Zingiberofficinale) rhizome extracts on the sporulation and spore germination of the invading seed fungi.Dried leaves and rhizomes were ground in sterile mortar, filtered through a wire sieve and then extracted usingthree different solvents. Results revealed that both extracts hindered sporulation and spore germination in the four fungi tested namely: Aspergillusflavus, A. niger, Rhizopusstolonifer and Fusarium species. The effect of the extracts on the test organisms increased with concentration of the extracts. Phytochemical screening confirmed the presence of alkaloids, saponins, lipids,tannins, flavonoids, and steroids. A reduction in nutrient contents was also observed in infested melon seeds. These results are significant and would serve as a template for planning the control of storage fungi in melon seeds in particular and other crop produce in general.

Author(s):  
Nishalani A/P Thivakar ◽  
Jeng Young Liew ◽  
Jia Geng Boon ◽  
Kheng Yuen Sim

Author(s):  
Ileana Cocan ◽  
Ersilia Alexa ◽  
Corina Danciu ◽  
Isidora Radulov ◽  
Atena Galuscan ◽  
...  

Author(s):  
Lina Winarti ◽  
Lusia Oktora Ruma Kumala Sari ◽  
Evi Umayah Ulfa ◽  
Dwi Ayu Samsuri

Bitter melon seeds oil is less soluble in the gastrointestinal tract and has low absorption. Therefore, a self-nanoemulsion dosage form needed to support its absorption and increase its stability. This study aimed to formulate bitter melon seeds oil into a self-nano emulsifying drug delivery system (SNEDDS) and evaluate its antioxidant activity using the Ferric Reducing Antioxidant Power (FRAP) method. The SNEDDS formulation uses bitter melon seed oil as the active ingredient and the oil phase, cremophor RH 40 as a surfactant, and glycerin as a co-surfactant. The results showed that the best SNEDDS formula obtains a ratio of oil: Smix (surfactant mixture) of 1:4. The best formula transmittance was 97.35 ± 0.04% with an emulsification time of 15.69 ± 0.06 seconds, a pH value of 6.87 ± 0.08, and a particle size of 31.8 ± 16.3 nm. Thermodynamic stability and robustness to dilution tests show the preparation is stable and resistant to various dilutions and pH. The antioxidant activity of bitter melon seed oil before and after being formulated into SNEDDS resulted in 62.73% and 50.31% reducing power. This result is not differences significantly. This study concluded that bitter melon seeds oil SNEDDS has good physical characteristics, stability, and no antioxidant activity changes.


2008 ◽  
Vol 35 (11) ◽  
pp. 1411-1418 ◽  
Author(s):  
D. Palmero Llamas ◽  
M. de Cara Gonzalez ◽  
C. Iglesias Gonzalez ◽  
G. Ruíz Lopez ◽  
J. C. Tello Marquina

2021 ◽  
Vol 7 (3) ◽  
pp. 073-079
Author(s):  
Agrawal RC

The present study was undertaken to explore the phytochemical screening, anti-bacterial and anti-oxidant activities of the hydro-methanolic leaves extract of Mangifera indica using standard screening methods such as disc diffusion and DPPH methods. In phytochemical screening, Mangifera indicaextract showed presence of secondary metabolites such as carbohydrate, phenols, tanins and proteins whereas Saponins were absent. It also showed antibacterial activities against almost all the test organisms. The extracts possessed potent hydroxyl radical scavenging activity against the positive control standard Ascorbic acid. Results denote the presence of hydroxyl radical scavenging principles in the extracts.


Author(s):  
Amaka, John I. ◽  
Attah, D. Daniel ◽  
Obisike, Victor U. ◽  
Benedict, Aboje G.

This study evaluated the larvicidal potential of the ethanolic and aqueous leaf extracts of Hyptis suaveolens Poit on the 4th larval instar of laboratory-reared Anopheles spp at varying concentrations of 0.1ml, 0.2ml, 0.3ml, 0.4ml and 0.5ml for specified periods of 24hrs, 48hrs and 72hrs. Qualitative phytochemical screening of the leaf extracts identified bioactive components like alkaloid, saponin, phenol, anthraquinone and flavonoid. The LC50 and LC90 values obtained indicate that the ethanolic leaf extracts of Hyptis suaveolens Poit had the greatest toxicity on the test organisms within 24hrs of exposure at median LC50 value of 0.485ml compared to the LC50 value of 0.625ml by its aqueous extract. The relative median potency estimates indicate that within 24 hrs, the ethanolic Hyptis suaveolens Poit was 0.161 times more potent on the test organism than aqueous Hyptis suaveolens Poit. The result of this research, therefore, underscores the efficacy of Hyptis suaveolens Poit as an eco-friendly alternative in Anopheles mosquito control. It is, therefore, recommended that quantitative phytochemical screening, application of column chromatography as well as thin layer chromatography be carried out on the extracts to isolate and purify toxic phytochemicals with larvicidal potentiality.


2021 ◽  
Vol 10 (2) ◽  
pp. 105-110
Author(s):  
Abdulbasit Haliru Yakubu ◽  
Mohammed Mustapha Mohammed ◽  
Abdulqadir Bukar Bababe ◽  
Hassan Yesufu Braimah

Plant secondary metabolites have provided important bioactive principles for developing new lead compounds. Within their confinement, they exhibit unique chemical diversity, which influences their diverse biological properties. The Vitaceae family is known for its potent antioxidant and antibacterial phytoconstituents, among other biological properties. Cyphostemma adenocaule is one of the family members explored for its ethnomedicinal properties. This study undertook the evaluation of the phytochemical, antioxidant, and antibacterial properties of the root extract of Cyphostemma adenocaule. Preliminary phytochemical screening revealed the presence of flavonoids, alkaloids, carbohydrates & glycoside, saponins, and tannins. The methanol root extract had the highest activity in the DPPH assay, providing IC50 (50% inhibition) of 10.87µg/ml, followed by n-Hexane (IC50 74.10µg/ml) and chloroform (IC50 74.31µg/ml) extract. In the antibacterial assay, the chloroform extract was active against E. coli (24.00±0.15) and had moderate activity against Staph. aureus (12.5±0.18). The n-Hexane extract was completely inactive against the test organisms while the methanol extract showed poor activity against the test organisms. The present study adds to the existing literature on Cyphostemma adenocaule with scientific evidence into its biological properties.


2014 ◽  
Vol 26 (3) ◽  
pp. 237-243 ◽  
Author(s):  
Tahiya Hilal Ali Alabri ◽  
Amira Hamood Salim Al Musalami ◽  
Mohammad Amzad Hossain ◽  
Afaf Mohammed Weli ◽  
Qasim Al-Riyami

Sign in / Sign up

Export Citation Format

Share Document