63 research outputs found
Lifestyle interventions for non-alcoholic fatty liver disease
Non-alcoholic fatty liver disease (NAFLD) is a multi-factorial disease and the most common of chronicliver diseases worldwide. The four clinical-pathological entities which are usually followed by NAFLDcourse include non-alcoholic steatosis, non-alcoholic steatohepatitis, advanced fibrosis/cirrhosis, andhepatocellular carcinoma. The cornerstones of NAFLD management and treatment, however, are healthylifestyles such as dietary modifications, regular physical activity, and gradual weight loss. At present, nodrugs or pharmacological agents have been approved for long-term treatment of NAFLD. Therefore, life-style modification is considered the main clinical recommendation and an initial step for the manage-ment of NAFL
In-vitro anti-microbial and brine-shrimp lethality potential of the leaves extract of nahar (Mesua ferrea) plant
The growing interest in human health and increasing
bacterial resistance to antibiotics among other reasons have
resulted into an increasing need for the exploration of both the essential oils and other plant extracts in the food and pharmaceutical industries. This work, as part of on-going work on the leaves of Nahar (Mesua ferrea) plant, was aimed at evaluating the antimicrobial activity, minimum inhibitory concentration as well as the cytotoxicity of the leaves extract. The dry leaves were grinded and extracted in an oven shaker set at 37ยฐC and 200rpm for 24 hours using ethanol and methanol as solvents. The agar disc diffusion method was used for the evaluation of antibacterial property of the leaves extract, micro broth dilution was employed for the determination of minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC), while Brine shrimp (Artemia salina) lethality bioassay was made use of for the cytotoxicity assay.
Ethanol gave higher extractโs yield (6.20%) than methanol. The extract showed a remarkable antibacterial property against all the selected microbes (Escherichia coli, Pseudomonas aeruginosa, Bacillus subtilis and Staphylococcus aureus) with the inhibition zones ranging from 16.0ยฑ0.5mm to 18.0ยฑ0.5mm for all the tested bacteria. The MIC range of 2.5- 0.625 mg/ml with MBC value of 5mg/ml was obtained for the gram-negative bacteria while MIC rangeof 1.3- 0.313mg/ml with MBC value of 2.5mg/ml was
obtained for the gram-positive bacteria. The leaves extract was found to be toxic to the Brine shrimps with LC50 of 500ppm (ฮผg/ml) suggesting that the extracts may contain bioactive compounds of potential the therapeutic and prophylactic significance
Preserving Cultural Heritage Exploration: Unveiling The Therapeutic Properties Of Endangered Plants (Hangasa, Parahulu, Honje)
Background: Hangasa (Engelhardia spicata), Parahulu (Vatica scortechinii), and Honje (Toona sinensis) plants have long been utilized by traditional communities for various purposes, including medicinal and daily needs. However, their existence is endangered, emphasizing the necessity to explore their therapeutic potential as a cultural heritage preservation effort. Objective: This study aims to identify phytochemical compounds in these plants and evaluate their pharmacological activities. Methodology: Plant samples were collected from their natural habitats, extracted, and tested for phytochemical compounds and biological activities. Results: Hangasa, Parahulu, and Honje contain phytochemical compounds with antioxidant, antimicrobial, anti-inflammatory, and potential anticancer activities. Conclusion: These rare plants possess therapeutic potential that can be utilized for the development of nutraceutical products. The combination of traditional knowledge with scientific research supports preservation and innovation in the field of nutraceuticals. Recommendations: Recommendations include the development of nutraceutical products, preservation of traditional knowledge, public education, and further research to understand the mechanisms of action of phytochemical compounds and effective product formulations
Physicochemical and antioxidant characteristics of Baccaurea angulata fruit juice extract
The purpose of this study was to explore the physicochemical and antioxidant characteristics of Baccaurea angulata fruit juice extract. Freeze-dried whole fruit (FDWF), freeze-dried berry (FDB), and freeze-dried skin (FDS) of B. angulata were analyzed for total phenolic, total flavonoid, total anthocyanin, and antioxidant activities. FDS recorded the highest moisture and ash content, protein, total fat, and water activity, compared to FDWF and FDB. FDS also contained the highest total phenolic, total flavonoid, and total anthocyanin, while FDWF recorded the highest in scavenging xanthine oxidase (35.9%) and ferric reducing activity (44.9 ฮผM TE/g). FDS, however, showed the highest DPPH (102.66 mg AA/100 g) and TEAC (847.46 mg TE/100 g) values. DPPH, TEAC and FRAP were strongly correlated with total phenol (r = 0.979; 0.948; 0.997) and total flavonoid (r = 0.987; 0.960; 0.992). Total anthocyanin had no correlation with DPPH and TEAC, but moderately with FRAP (r = 0.734). Physicochemical and antioxidant characteristics of B. angulata may indicate that this fruit may impart health benefits when consumed and can be suggested as a good source for nutraceutical beverages.Keywords: Antioxidant properties, Baccaurea angulata, freeze-dried fruit, nutritional composition, physicochemical.African Journal of Biotechnology Vol. 12(34), pp. 5333-533
Seeds' oil as biolubricant
The increasing demands for oils both for human consumption and for other industrial
applications has culminated into an increasing need to search for oils from nonconventional
sources to augment the available ones and also to meet specific
applications. Environmental concerns about synthetic non-biodegradable polymers have
also encouraged efforts towards their substitution with fully or partially biodegradable
polymers of semi-synthetic or bio-origin. The physic-chemical properties of vegetable
oils and their structures were discussed in terms of their potentially future use as base oils
biolubricants and additives
Toxicity Assessment of Lactococcus lactis IO-1 Used in Coconut Beverages against Artemia salina using Brine Shrimp Lethality Test
Background and objective: Plant-based fermented foods containing favorable micro-organisms have been used to improve diets. Starter microorganisms may produce toxic compounds that are hazardous to consumers. Brine shrimp lethality test is a convenient and appropriate assay to check toxicity of samples. The aim of this study was to investigate toxicity of pasteurized coconut beverages at 70ยฐC, 80ยฐC and 90ยฐC for 25, 15 and 5 min, respectively, and unpasteurized coconut beverages fermented by Lactococcus lactis against Artemia salina nauplii.
Material and methods: After extraction of coconut beverages fermented by Lactococcus lactis using methanol, cytotoxicity was assessed using (lethality concentration). Newly 10 hatched Artemia salina nauplii were transferred into various concentrations (in replicates) of the fermented sample extracts. After 24 h, survived Artemia salina nauplii were counted and lethality concentration was assessed. The brine shrimp lethality test was used to investigate sample toxicity at various doses from 1 to 500 ยตg ml-1 at various time intervals.
Results and conclusion: The fermented extracts included low larvicidal potential against Artemia salina nauplii. Correlations were reported between the extract doses and percentage mortality of nauplli brine shrimp. The pasteurized fermented extracts were less toxic and cheaper. Interestingly, starter culture, fermentation, thermal treatment and time contributed to breaking down of hydrolysable tannins and larger polyphenolic compounds, producing smaller compounds with lower toxicity responses in brine shrimp lethality test. The four probiotics beverage extracts included non-cytotoxic activity as presented by low mortalities in brine shrimp lethality test. In conclusion, these extracts can be used to justify probiotic production of beverages.
Conflict of interest: The authors declare no conflict of interest
Solvent Effect on the Phenolic Compounds and Biological Activity of Difference Morinda citrifolia Root Extract
Cancer and antimicrobial resistance have become a threat to global health and development. This work aimed to identify the biological activities and phenolic compounds content of different Morinda citrifolia L. root extracts. The relationship between biological activities and phenolic content was also discussed. All extracts were screened for antioxidant activity using anti-oxidant assays (FRAP, DPPH, TAOC, ABTS, and BCB) and quantitative phytochemical analyses (TPC). Antimicrobial activity against four bacterial and two fungal strains as well as cytotoxic activities on stomach cancer (SNU-1), colon cancer (LS-174T and HT29), leukemia (K562), and breast cancer (MDA-MB-361) cell lines were also performed. With a value of 122.789 g of gallic acid equivalent/mg extract, the dichloromethane extract had the highest total phenolic content (TPC). The extract also showed high antioxidant activities in all the antioxidant assays and antimicrobial activity. The FRAP (r2 = 0.962) as well as antimicrobial activities against Staphylococcus aureus (r2 = 0.708), Bacillus subtilis (r2 = 0.890) and Pseudomonas aeruginosa (r2 = 0.870) were strongly correlated with the total phenolic content. The LS-174T, K562, HT-29, and MDA-MB-361 cytotoxic activities were also strongly correlated with the total phenolic content with r2 = -0.899, -0.845, -0.981, and -0.978, respectively. The results obtained suggested that the dichloromethane extract of Morinda citrifolia has high biological activity compared to other extracts
Solvent effect on the phenolic compounds and biological activity of difference Morinda citrifolia root extract
Cancer and antimicrobial resistance have become a threat to global health and development. This work aimed to identify the biological activities and phenolic compounds content of different Morinda citrifolia L. root extracts. The relationship between biological activities and phenolic content was also discussed. All extracts were screened for antioxidant activity using anti-oxidant assays (FRAP, DPPH, TAOC, ABTS, and BCB) and quantitative phytochemical analyses (TPC). Antimicrobial activity against four bacterial and two fungal strains as well as cytotoxic activities on stomach cancer (SNU-1), colon cancer (LS-174T and HT29), leukemia (K562), and breast cancer (MDA-MB-361) cell lines were also performed. With a value of 122.789 g of gallic acid equivalent/mg extract,the dichloromethane extract had the highest total phenolic content (TPC). The extract also showed high antioxidant activities in all the antioxidant assays and antimicrobial activity. The FRAP (r2 = 0.962) as well as antimicrobial activities against Staphylococcus aureus (r2 = 0.708), Bacillus subtilis (r2 = 0.890) and Pseudomonas aeruginosa (r2 = 0.870) were strongly correlated with the total phenolic content. The LS-174T, K562, HT-29, and MDA-MB-361 cytotoxic activities were also strongly correlated with the total phenolic content with r2 = -0.899, -0.845, -0.981, and -0.978, respectively. The results obtained suggested that the dichloromethane extract of Morinda citrifolia has high biological activity compared to other extracts
Optimisation of phenolic compounds and antioxidant capacity of Trigona honey and propolis using response surface methodology from fermented food products
Honey and propolis are honeybee products that are becoming increasingly common as a result of their ability to improve human health. The optimal combination of honey and propolis for total phenolic content (TPC), total flavonoid content (TFC), and antioxidant capacity were analysed for Trigona honey and propolis aqueous extracts using response surface methodology and a central composite design. The effect of honey (X1: 15 - 16.5 g) and propolis (X2: 13.5 - 15 g) on the total phenolic content (TPC, Y1), total flavonoid content (TFC, Y2), antioxidant capacity (DPPH, Y3; ABTS, Y4), and FRAP (Y5) were tested. The experimental outcomes were adequately fitted into a second-order polynomial model regarding TPC (R2 = 0.9539, p = 0.0002), TFC (R2 = 0.9209, p = 0.0010), antioxidant activity (DPPH, R2 = 0.9529, p = 0.0002; ABTS, R2 = 0.9817, p < 0.0001), and FRAP (R2 = 0.9363, p = 0.0005). The optimal percentage compositions of honey and propolis were 15.26 g (50.43%) and 15 g (49.57%), respectively. The predicted results for TPC, TFC, DPPH (IC50), ABTS, and FRAP were 162.46 mg GAE/100 g, 2.29 mgQE/g, 14.52 mg/mL, 564.27 ยตMTE/g, and 3.56 mMTE/g, respectively. The experimental outcomes were close to the predicted results: 152.06 ยฑ 0.55 mg GAE/100 g, 2.21 ยฑ 0.05 mg QE/g, 13.85 ยฑ 0.34 mg/mL, 555.22 ยฑ 36.84 ยตMTE/g, and 3.71 ยฑ 0.02 mMTE/g, respectively. It was observed that the optimal combination of honey and propolis provided the highest antioxidant yield and can be used as functional foods, cosmetics, and medical and pharmacological ingredients
Antimicrobial property of date seed extract
Twelve extracts from four solvents (ethanol, methanol, acetone and distilled water) and
three varieties of date palm seeds (Deglet Nour, Biruni and Mixture) were tested in vitro
for their antimicrobial activity against two Gram-positive (Staphylococcus aureus and
Bacillus subtilis) and two Gram-negative (Escherichia coli, Pseudomonas aeruginosa)
bacteria species to establish whether or not they have antimicrobial activity. The central
composite design was used to investigate the effects of three independent variables
(extraction temperature, extraction time and agitation speed) on the dependent variable
(inhibition zone). All the twelve extracts of date palm seeds inhibited all the test
microorganisms with minimum inhibitory concentration ranging from 10 to 42mg/ml and
with minimum bactericidal concentration ranging from 21 to 167mg/ml. Extraction
temperature, agitation, and extraction time significantly affected total antimicrobial
contents extracted from date seeds
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