scholarly journals A SIMPLE FORMULATION OF LIP BALM USING CARROT EXTRACT AS A NATURAL COLORING AGENT

2019 ◽  
Author(s):  
Nur Tsalits Fahman Mughni

This study aims to obtain an optimum combination formulation of cera alba in the manufacture of lip balm with natural material collorant in accordance with SNI. The experimental method used was maceration of natural products with n-hexane solvents and concentrated with a rotary evaporator to find a dark yellow paste. Furthermore, making lip balm with various formulations of 2 gr cera alba, 2.5 gr, 3 gr and without cera alba in 10 gr shea butter with additives of orange and stawbery essence and natural coloring agent from carrots. The stability of lip blam the homogeneity test was carried out, the stability test carried out for 20 days at room temperature by observing changes in color, odor, and dosage form, pH test, topical test, and irritation test. The experimental results showed that all lip balm preparations were homogeneous, had a pH of 5-5,5 and did not cause skin irritation after 10 minutes of applying to the skin.

Pharmaceutics ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 845
Author(s):  
Min-Hwan Kim ◽  
Yae-Eun Jeon ◽  
Soobeen Kang ◽  
Jae-Young Lee ◽  
Ki Won Lee ◽  
...  

Orobol is one of the major soy isoflavones, and has been reported to have various pharmacological activities, including an anti-skin-aging effect. However, since it has low solubility in water and physicochemical instability, the formulation of orobol for delivery into the dermal layer of the skin could be challenging. The objective of this study was to prepare lipid nanoparticles formulations of orobol to enhance its stability as well as its deposition into the skin. Formulations of orobol-loaded solid lipid nanoparticles (SLNs) and nanostructured lipid carriers (NLCs) were characterized in terms of their mean particle size, entrapment efficiency, and morphology. The nano-sized spherical NLCs formulations maintained the stability of orobol for up to 28 days. Moreover, the NLCs formulation significantly increased the in vitro deposition of orobol into both Strat-M membranes and human cadaver skin compared with the other formulations. Additionally, the NLCs formulation did not cause significant skin irritation in clinical study. These results demonstrate that a shea butter-based NLC formulation could be a promising and safe carrier system for improving the stability of orobol and enhancing its topical skin delivery.


2018 ◽  
Vol 10 (1) ◽  
Author(s):  
Maria T. Nainggolan ◽  
Eva S. Simaremare ◽  
Rani D. Pratiwi

Daun afrika (Vernonia amygdalina) contains flavonoids, tannins, saponins, and terpenoids that can be used for pharmacology activity: annihilate the parasites that causing schistosomiasis, malaria leishmaniasis, antiamoeba, antitumor and antimicrobials. The purposes of this research were to screen the phytochemistry of african leaf, formulate and test the stability of vanishing cream (VC) base. The methods used were sample collection, extract preparation, formulation, and stability evaluation. The results showed that extract afrika leaves had alkaloids, flavonoids, tannins, saponins, steroids, and triterpenoids. Extract of daun afrika can be made to good VC base formula including organoleptic test, homogeneity test, pH test, spreading test, sticky test, and VC safety test by distributing questionnaires. The cream was stabil for 21 days at room temperature. Observation of physical properties good performed every week to organoleptis, pH, adhesion, and spreading power.  Key words: stability, V. amygdalina, kill parasites, Vanishing Cream


2018 ◽  
Vol 1 (1) ◽  
pp. 237-244
Author(s):  
T. Ismanelly Hanum

Latar Belakang: Antiaging adalah sediaan untuk menghambat proses degeneratif sehingga menghambat timbulnya tanda-tanda penuaan pada kulit. Beras merah (Oryza nivara L.) memiliki kandungan antosianin yang merupakan senyawa fenolik yang bertindak sebagai antioksidan alami yang efektif untuk mencegah penuaan dini. Tujuan penelitian: untuk memformulasikan dan menguji aktivitas antiaging ekstrak beras merah dalam bentuk sediaan krim. Metodologi: pembuatan ekstrak beras merah, formulasi dalam bentuk sediaan krim dengan variasi konsentrasi ekstrak beras merah 5%, 7,5% dan 10%. Evaluasi sediaan krim meliputi uji homogenitas, tipe emulsi, pengukuran pH, viskositas, uji iritasi dan uji stabilitas seperti pengamatan organoleptis dan pH selama penyimpanan 12 minggu pada suhu kamar. Pengujian aktivitas anti-aging dilakukan terhadap sukarelawan dengan mengoleskan krim dua kali sehari pada kulit punggung tangan dan dilakukan pengukuran parameter kadar air, kehalusan kulit, besar pori, dan banyaknya noda menggunakan skin analyzer pada kondisi awal dan setiap minggu selama pemakaian 4 minggu. Hasil penelitian: ekstrak beras merah dapat diformulasikan dalam sediaan krim yang homogen,tidak mengiritasi, dan stabil selama penyimpanan 12 minggu. Sediaan krim ekstrak beras merah 10% memiliki kadar air pada kulit lebih banyak, kulit yang lebih halus, ukuran pori yang lebih kecil dan jumlah noda lebih sedikit dibandingkan dari konsentrasi yang lainnya. Kesimpulan: ekstrak beras merah dapat diformulasi dalam bentuk sediaan krim sebagai antiaging setelah empat minggu pemakaian. Background: Anti-aging is a substance to slow degenerative process in causing the signs of aging to skin. Red rice (Oryzanivara L.) contains anthocyanin which is a fenolicthat can be usedas an effective natural anti-oxidant to prevent premature aging. Research objectives: To formulate and evaluatethe anti-aging activity of red rice extract in cream solution with red rice extract concentration variation of 5%, 7%, and 10%. The cream evaluation included homogeneity test, emulsion type, pH measurement, viscosity, irritation test, stability test such as organoleptic and pH observation for 12 weeks in room temperature. The anti-aging activity test was conducted on volunteers by applyingthe cream twice a day to their skin at the back of hands and measuring the parameters, including water level, skin smoothness, pores size, and stains using skin analyzer to the initial state and for every 4 weeks use. Findings: Red rice extract could be formulated into homogenous cream, not irritating, and stable for 12 weeks storage period. The 10% red rice extracted cream had more water content to the skin, smoother skin, smaller pores size, and less stain than the other solutions. Conclusion: Red rice extract could be formulated in cream solution as anti-aging after 4 weeks use.


2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Nabil A. Alhakamy ◽  
Shadab Md ◽  
Md Shoaib Alam ◽  
Rasheed A. Shaik ◽  
Javed Ahmad ◽  
...  

The present study aimed to optimize luliconazole nanoemulsion using Box–Behnken statistical design, which was further incorporated into the polymeric gel of Carbopol 934. The formulation was characterized for its size, entrapment efficiency, ex vivo permeation, and mechanism of release. The size of the dispersed globules of the optimized drug-loaded nanoemulsion was found to be 17 ± 3.67 nm with a polydispersity index (PDI) less than 0.5. Although the surface charge was recorded at –9.53 ± 0.251, the stability was maintained by the polymeric matrix that prevented aggregation and coalescence of the dispersed globules. The luliconazole-nanoemulgel (LUL-NEG) was characterized for drug content analysis, viscosity, pH, and refractive index, where the results were found to be 99.06 ± 0.59%, 9.26 ± 0.08 Pa.s, 5.65 ± 0.17, and 1.31 ± 0.08, respectively. The permeation across the rat skin was found to be significantly higher with LUL-NEG when compared with LUL gel. Furthermore, the skin irritation test performed in experimental animals revealed that the blank NEG, as well as the LUL-NEG, did not produce any signs of erythema following 48 h exposure. In addition, the histopathological findings of the experimental skins reported no abnormal signs at the formulation application site. Finally, the NEG formulation was found to create a statistically significant zone of inhibition ( P  < 0.05) when compared to all other test groups. Overall, it could be summarized that the nanoemulgel approach of delivering luliconazole across the skin to treat skin fungal infections could be a promising strategy.


1961 ◽  
Vol 06 (03) ◽  
pp. 435-444 ◽  
Author(s):  
Ricardo H. Landaburu ◽  
Walter H. Seegers

SummaryAn attempt was made to obtain Ac-globulin from bovine plasma. The concentrates contain mostly protein, and phosphorus is also present. The stability characteristics vary from one preparation to another, but in general there was no loss before 1 month in a deep freeze or before 1 week in an icebox, or before 5 hours at room temperature. Reducing agents destroy the activity rapidly. S-acetylmercaptosuccinic anhydride is an effective stabilizing agent. Greatest stability was at pH 6.0.In the purification bovine plasma is adsorbed with barium carbonate and diluted 6-fold with water. Protein is removed at pH 6.0 and the Ac-globulin is precipitated at pH 5.0. Rivanol and alcohol fractionation is followed by chromatography on Amberlite IRC-50 or DEAE-cellulose. The final product is obtained by isoelectric precipitation.


2020 ◽  
Author(s):  
Katsuya Maruyama ◽  
Takashi Ishiyama ◽  
Yohei Seki ◽  
Kounosuke Oisaki ◽  
Motomu Kanai

A novel Tyr-selective protein bioconjugation using the water-soluble persistent iminoxyl radical is described. The conjugation proceeded with high Tyr-selectivity and short reaction time under biocompatible conditions (room temperature in buffered media under air). The stability of the conjugates was tunable depending on the steric hindrance of iminoxyl. The presence of sodium ascorbate and/or light irradiation promoted traceless deconjugation, restoring the native Tyr structure. The method is applied to the synthesis of a protein-dye conjugate and further derivatization to azobenzene-modified peptides.


1987 ◽  
Vol 52 (5) ◽  
pp. 1356-1361
Author(s):  
S. Abdel Rahman ◽  
M. Elsafty ◽  
A. Hattaba

The conformation of elastin-like peptides Boc-Ala-Pro-Gly-Val-APEGM, Boc-Ala-Pro-Gly-Val-Gly-Val-APEGM, Boc-Ala-Pro-Gly-Val-Ala-Pro-Gly-Val-Gly-Val-APEGM, Boc-Ala-Pro-Gly-Val-Gly-Val-Ala-Pro-Gly-Val-Gly-Val-APEGM were examined in solution using circular dichroism at 30 °C, 50 °C, and 70 °C and in solid state by IR at room temperature. The studies show that the β-turn is a significant conformational feature for peptides under investigation in solution at 30 °C and 50 °C, but at 70 °C the tetra, hexa, and decapeptides show the CD feature characteristic of the β-structure while the dodecapeptide spectra show the presence of β-turn which indicates the stability of the β-turn at this chain length. The IR spectra show that in the solid state at room temperature all investigated peptides assume essentially a β-turn except the tetrapeptide which present evidence of antiparallel β-structure. The β-turn contribution in the IR spectra increases with the increase of the chain length of the peptide.


1956 ◽  
Vol 2 (3) ◽  
pp. 145-159 ◽  
Author(s):  
Joseph T Anderson ◽  
Ancel Keys

Abstract 1. Methods are described for the separation, by paper electrophoresis and by cold ethanol, of α- and β-lipoproteins in 0.1 ml. of serum, with subsequent analysis of cholesterol in the separated portions. 2. It is shown that both methods of separation yield separated fractions containing substantially the same amounts of cholesterol. 3. Detailed data are given on the errors of measurement for total cholesterol and for cholesterol in the separated lipoprotein fractions. 4. Studies are reported on the stability of cholesterol in stored serum and on paper electrophoresis strips. It is shown that simple drying on filter paper causes no change in cholesterol content and yields a product that is stable for many weeks at ordinary room temperature. 5. The sources of variability in human serum cholesterol values are examined and it is shown that spontaneous intraindividual variability is a much greater source of error than the errors of measurement with these methods.


2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Ramanshu P. Singh ◽  
Shakti Yadav ◽  
Giridhar Mishra ◽  
Devraj Singh

Abstract The elastic and ultrasonic properties have been evaluated at room temperature between the pressure 0.6 and 10.4 GPa for hexagonal closed packed (hcp) hafnium (Hf) metal. The Lennard-Jones potential model has been used to compute the second and third order elastic constants for Hf. The elastic constants have been utilized to calculate the mechanical constants such as Young’s modulus, bulk modulus, shear modulus, Poisson’s ratio, and Zener anisotropy factor for finding the stability and durability of hcp hafnium metal within the chosen pressure range. The second order elastic constants were also used to compute the ultrasonic velocities along unique axis at different angles for the given pressure range. Further thermophysical properties such as specific heat per unit volume and energy density have been estimated at different pressures. Additionally, ultrasonic Grüneisen parameters and acoustic coupling constants have been found out at room temperature. Finally, the ultrasonic attenuation due to phonon–phonon interaction and thermoelastic mechanisms has been investigated for the chosen hafnium metal. The obtained results have been discussed in correlation with available findings for similar types of hcp metals.


Author(s):  
David Quéré ◽  
Mathilde Reyssat

Superhydrophobic materials recently attracted a lot of attention, owing to the potential practical applications of such surfaces—they literally repel water, which hardly sticks to them, bounces off after an impact and slips on them. In this short review, we describe how water repellency arises from the presence of hydrophobic microstructures at the solid surface. A drop deposited on such a substrate can float above the textures, mimicking at room temperature what happens on very hot plates; then, a vapour layer comes between the solid and the volatile liquid, as described long ago by Leidenfrost. We present several examples of superhydrophobic materials (either natural or synthetic), and stress more particularly the stability of the air cushion—the liquid could also penetrate the textures, inducing a very different wetting state, much more sticky, due to the possibility of pinning on the numerous defects. This description allows us to discuss (in quite a preliminary way) the optimal design to be given to a solid surface to make it robustly water repellent.


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