activity test
Recently Published Documents





Biocelebes ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 90-97
Gaby Maulida Nurdin

This study aimed to determine the effect of concentration ethanol extract from tembelakan leaf (Lantana camara Linn)  on bacteria growth of Staphylococcus aureus and Escherichia coli. Extraction was done by maceration using ethanol 96% and then separated using rotary evaporator. Antibacterial activity test of the ethanol extract by Well agar diffusion method. Variation in crude extract saponin used in this study was 5%, 10%, 15%, 20%, 25% and positive controls were used for comparison with Amoxicilin and Chloramphenicole concentration of 25 µg/mL and DMSO as a negative control. The results of antibacterial activity test is indicated by the formation of growth inhibitory region S. aureus and E. coli. The result of growth inhibitory regions was analyzed by One way ANOVA. One way ANOVA test results indicate that there are effects of ethanol extract concentration of tembelekan leaf (L. camara Linn) against S. aureus and E. coli. Effective concentration of ethanol extract tembelekan leaf (L. camara Linn) when compared with positive control to inhibit the growth of S. aureus and E. coli is at 25% with a relatively strong antibacterial activity. Test with phytochemicals screening method which is showed that tembelekan leaf contains the flavanoid, saponins, and tannins compounds as antibacterial

Hariyanti Hariyanti ◽  
Retno Wahyuningrum ◽  
Shintia Lintang Charisma

Background: cinchona extract contains quinoline alkaloids, has telangiectatic activity, is practically insoluble in water so penetration into hair follicles is low and requires a delivery system, namely cream. Objective: to determine the formula of cinchona extract cream with good activity, physical stability and safety. Methodology: cinchona bark extraction (soxhletation method), phytochemical screening, cinchona extract dosage determination, optimization of cream formula using Design Expert software version 11. Evaluation: pH, adhesion, spreadability, viscosity and cycling test stability. Activity test using guinea pigs (Cavia porcellus) for 14 days, parameters of hair length/2 days, hair mass (14th day). Acute dermal irritation test using rabbit (Orycogalus cuniculus) by erythema and edema index parameters. Results: cinchona extract (13.32% yield) contained quinoline alkaloids, cinchona extract dosage was 20% (p<0.05). The optimum formula is F2 with characteristics: pH 6.48±0.07, adhesion 1.16±0.07, spreadability 4.99±0.85 and viscosity 3067±416.45, has good physical stability. Activity test: test area hair length 13.54 – 62.14% longer than normal control and 10.10 – 49.17% than negative control. The hair mass of test area was 122.91% heavier than normal control and 104.48% of negative control (p<0.05). Cinchona extract and excipients were non-irritant. Conclusion: Cinchona extract cream (20%) has hair fertilizer activity, good physical stability and safety.

Peng Chen ◽  
Zhongkun Zhou ◽  
Yunhao Ma ◽  
Rentao Zhang ◽  
Mengze Sun

2021 ◽  
Vol 9 (12) ◽  
pp. 270-282
Solomon Chimaraoke Egeonu ◽  
Akataobi Kelechi Uzoma ◽  
Eke Ugorji Iheanacho ◽  

Bryophyllumpinnatum, which belong to the family Crassulceae, is a succulent plant native to Madagascar, which is a popular houseplant and has become naturalized in tropical and subtropical areas. It has been in traditional medicine for the treatment of hypertension and kidney stones. Despite these acclaimed efficacies of its use in trado-medical practices, the effects on body organs are not well understood. The aim of this study was to evaluate antioxidant properties of Bryophyllumpinnatum. Fifteen adult Sprague dowley rats were use in this study split into three groups (group 1, 2 and 3). Group 1 animals served as the control, while group 2 and 3 served as the experimental groups. Acute toxicity, and antioxidants. The result of this study found LD50 to be above 5000mg/kg. In vitro antioxidant test found the presence of alkaloids, saponins, thiamin, riboflavin etc. Antioxidant activity test result found an increase in GSH, GPx, a decrease in MDA and a stable CAT. In conclusion, we recommend its uses in human, but at a regulated doses because of its efficacy as stated in this study.

2021 ◽  
pp. 189
Munawarohthus Sholikha ◽  
Nur M, R. ◽  
Nur M, R. ◽  
Mahfudza, A.R.

Tyrosinase is an enzyme that plays a role in the formation of skin pigments from a person because it is involved in the process of melanogenesis. Tyrosinase plays a very important role in the skin depigmentation process, there are several attempts to inhibit the skin depigmentation process, one of which is by inhibiting tyrosinase. Research on the leaves and roots of singawalang (Petiveria alliacea) was conducted to determine the potential as a tyrosinase inhibitor. Leaves and root extracts of singawalang were macerated with ethanol, then tested for identification of secondary metabolites. Singawalang leaves extract contains alkaloids, tannins and terpenoids while singawalang root extract contains alkaloids, flavonoids, tannins and terpenoids. Tyrosinase inhibitory activity used the microplate reader ELISA technique at a wavelength of 492 nm. Tests were carried out on kojic acid as a comparison and L-DOPA as a substrate. The results of the tyrosinase inhibition activity test for the extracts of singawalang leaves, singawalang roots and kojic acid, IC50 were 9.817 mg / mL, 4.987 mg / mL and 0.092 mg / mL, respectively.

Melysa Putri ◽  
Hafnimardiyanti Hafnimardiyanti ◽  
Dian Savitri

Hand sanitizer is an antiseptic in gel form. The gel texture in hand sanitizers is caused by the carbomer which acts as a gelling agent. Therefore, this research was done to observe the effect of carbomer on the value of pH, viscosity, and microbial activity in hand sanitizers. As for testing pH using pH meters, testing viscosity was carried out using the viscometer method, while microbial activity was carried out using the Total Plate Number, Yeast Mold Number and microbial pathogen tests. Based on the data obtained, the carbomer greatly influences the increase in the viscosity of the hand sanitizer gel, the pH value was obtained at 6.0 - 7.06, while in the microbial activity test none of the microbes grew in each medium. Therefore, it can be concluded that the hand sanitizer with code P3 is the best sample

2021 ◽  
Vol 5 (4) ◽  
pp. 365-368
Muthmainah Tuldjanah ◽  
Niluh Puspita Dewi ◽  
Dian Rahmawati

Morinda citrifolia. L leaf is a plant that has the potential as an antioxidant due to the presence of compounds in the form of flavonoids and other phenolic compounds that can function as natural antioxidants. In connection with this, research was carried out to Morinda citrifolia. L formulate leaf extract in the form of effervescent granules. Morinda citrifolia leaf extract was macerated with ethanol 96% as solvent. Phytochemical screening showsthat the extract contains flavonoids, tannins, saponins and alkaloids. The extract was formulated with various concentrations of F1 (20%), F2 (25%), F3 (4%). Determination of antioxidant activity using the DPPH free radical immersion method. The results showed that the concentration in the granules influenced antioxidant activity with IC50 values of 109.05 ppm, 101.33 ppm and 73.28 ppm, respectively

2021 ◽  
Vol 2 (4) ◽  
pp. 1-7
Sri Wahyuni ◽  
Teguh Satria Amin ◽  
Nomi Noviani ◽  
Leni Handayani

Enzymes are natural products that play an important role in various industrial applications, from food processing to chemical products. One of the most widely used enzymes is amylase. Amylase is an enzyme that plays a role in starch hydrolysis. Amylolytic bacteria can be isolated in the digestive tract of fish. This is most bacteria that occupy the digestive tract have high activity. This study aims to obtain a potential isolate producing amylase bacteria whose activity can be determined through morphological characterization and activity test of enzyme-producing bacteria. The results obtained from this study were ten isolates with the potential to produce amylase enzymes, which were marked with a positive test after the addition of iodine.

Sign in / Sign up

Export Citation Format

Share Document