FORMULASI DAN EVALUASI VARIASI BASIS GEL AIR PERASAN TEMUAWAK (Curcuma xanthorrhiza R.) SEBAGAI ANTISEPTIK TANGAN

ABSTRACT Temulawak (Curcuma xanthorrhiza R.) is a plant that contains antimicrobial properties of essential oil and curcumin compounds. The purpose of this study was to formulate temulawak juice into gel preparations by varying the HPMC and Carbomer gel bases with each base concentration of 1%, testing the effectiveness of the antiseptic preparations and evaluating the physical preparations of the gel. This study used laboratory experimental methods. temulawak is soaked in aquadest then filtered and centrifuged to obtain temulawak juice and formulated in a gel preparation. Testing the effectiveness as a hand antiseptic using the replica method. The results showed that the temulawak water gel met the physical properties of the gel preparation which included organoleptic test, homogeneity test, pH test, spreadability test, adhesion test, and syneresis test. The percentage of colony decline using the HPMC base was 29.53% and the Carbomer base was 14.74%. This shows that the gel preparation of Temulawak juice cannot reduce the normal flora of the skin so that it does not affect an antiseptic for hands. Key Words : Antiseptic, gel preparations, Curcuma (Curcuma xanthorrhiza R.) ABSTRAK Temulawak (Curcuma xanthorrhiza R.) merupakan tanaman yang memiliki kandungan senyawa minyak atsiri dan kurkumin yang bersifat antimikroba. Tujuan dari penelitian ini untuk memformulasikan air perasan temulawak menjadi sediaan gel dengan memvariasikan basis gel HPMC dan Karbomer dengan masing-masing konsentrasi basis sebesar 1 %, menguji efektivitas antiseptik sediaan dan mengevaluasi sediaan fisik dari gel tersebut. Penelitian ini menggunakan metode eksperimental laboratorium. Temulawak direndam dengan aquadest kemudian disaring dan disentrifuse untuk mendapatkan air perasan temulawak dan diformulasikan dalam sediaan gel. Pengujian efektivitas sebagai antiseptik tangan menggunakan metode replika. Hasil penelitian menunjukkan bahwa gel air perasan temulawak memenuhi persyaratan sifat fisik sediaan gel yang meliputi uji organoleptik, uji homogenitas, uji pH, uji daya sebar, uji daya lekat dan uji sineresis. Presentase penurunan koloni menggunakan basis HPMC sebesar 29,53 % dan basis Karbomer sebesar 14,74 %. Hal ini menunjukkan bahwa sediaan gel air perasan temulawak tidak dapat menurunkan jumlah flora normal kulit sehingga tidak memiliki efek sebagai antiseptik tangan. Kata Kunci : Antiseptik, sediaan gel, Temulawak (Curcuma xanthorrhiza R.)

Phenethyl Isothiocyanate-Containing Carbomer Gel for Use against Squamous Cell Carcinoma

It is currently estimated that one in every five Americans will develop skin cancer during their lifetime. Squamous cell carcinoma (SCC) is a common type of skin cancer that can develop due to the skin’s exposure to the sun. Herein, we prepared a topical gel containing 0.5% v/w phenethyl isothiocyanate (PEITC) for the treatment of SCC. PEITC is a naturally occurring isothiocyanate that has been shown to have efficacy against various types of cancer in preclinical studies. We first incorporated PEITC into a carbomer gel. A uniform formulation was prepared, and its viscosity was appropriate for topical application. We then demonstrated the release of PEITC from the gel into and through a Strat-M skin-like membrane. Finally, the effects of the PEITC-containing gel were tested against SCC and normal keratinocytes skin cells in culture, and these results were compared to those obtained for free 5-fluoruracil (5-FU), a commonly used skin-cancer drug. Our results show that a homogeneous PEITC-containing topical gel can be prepared and used to kill SCC cells. Thus, our formulation may be useful for treating SCC in the clinic.

Influence of additives on suspension structure

The aim of this study was to compare the stability and texture of three zinc oxide suspensions with different additives. Suspension 1 was made as official magistral formulation Suspensio album 7.5% from Formulae magistrales 2008. Suspension 2 was prepared when 1% carbomer gel was added to suspension 1 and suspension 3 was prepared when polysorbate 20 was added to suspension 2. After stability tests, texture analysis was performed on all suspensions. Following parameters were measured: hardness cycle 1, hardness cycle 2, cohesiveness, adhesiveness, resilience and springiness. The study showed that suspension 3 had the lowest value of hardness, and therefore the best spreadability. Also, suspension 3 was the least sticky of all three, since it was characterized with the lowest adhesiveness. Further, suspension 3 was the most cohesive and is predicted to withstand the stress during packing and use longer than others. On the other hand, the highest values of resilience and springiness were detected for suspension 1, while the lowest was related to suspension 2. Therefore, the best textural characteristics were assigned to suspension 3. This result is in accordance with the results of performed stability tests. The results of our study offer insight into potential improvements of the current magistral formulation Suspensio album 7.5%.

Rheological behavior study and its significance in the assessment of application properties and physical stability of phytosome loaded hydrogels

Phytosomes are amphiphilic molecular complexes of substances of plant origin and phospholipids that are considered as active ingredients of dermopharmaceutical and cosmetic formulations of potentially improved efficiency. The study aim was the formulation of carbomer hydrogels with commercially available phytosomes of escin (Escin ß-Sitosterol Phytosome®) (EP) and 18-ß glycyrrhetinic acid (18-ß Glycyrrhetinic Acid Phytosome®) (GP) and evaluation of their application properties and real-time physical stability. Phytosomes incorporation did not significantly affect pH of the hydrogels, which was acceptable for cutaneous application. However, these hydrogels had significantly different organoleptic properties (opaque and softer consistency) compared to the hydrogel without active substance (C) and the hydrogels with pure active substances (E and G) used for comparison. The values of maximum and minimum apparent viscosity and yield stress were significantly lower in phytosome-loaded hydrogels. The results of oscillatory rheological analysis indicated that viscous character prevails in EP and GP hydrogels (elastic modulus (G')˂viscous modulus (G")), while in hydrogels C, E and G elastic properties were more pronounced (G'˃G"). Escin phytosome had greater influence on carbomer gel network strength. Phytosome-loaded hydrogels were physically stable during 24 months of storage under ambient conditions, although the rheological analysis also indicated a potential risk of sedimentation.

Ångstrom-scale silver particle–embedded carbomer gel promotes wound healing by inhibiting bacterial colonization and inflammation

Poor wound healing after diabetes or extensive burn remains a challenging problem. Recently, we presented a physical approach to fabricate ultrasmall silver particles from Ångstrom scale to nanoscale and determined the antitumor efficacy of Ångstrom-scale silver particles (AgÅPs) in the smallest size range. Here we used the medium-sized AgÅPs (65.9 ± 31.6 Å) to prepare carbomer gel incorporated with these larger AgÅPs (L-AgÅPs-gel) and demonstrated the potent broad-spectrum antibacterial activity of L-AgÅPs-gel without obvious toxicity on wound healing–related cells. Induction of reactive oxygen species contributed to L-AgÅPs-gel–induced bacterial death. Topical application of L-AgÅPs-gel to mouse skin triggered much stronger effects than the commercial silver nanoparticles (AgNPs)–gel to prevent bacterial colonization, reduce inflammation, and accelerate diabetic and burn wound healing. L-AgÅPs were distributed locally in skin without inducing systemic toxicities. This study suggests that L-AgÅPs-gel represents an effective and safe antibacterial and anti-inflammatory material for wound therapy.

Gel formulations containing Sumbawa's horse milk with carbomer gel base

Peptides from Sumbawa horse milk are active as antibacterial and antioxidant. Horse milk has a higher content of vitamin C than cow or goat's milk, and cream products that contain milk can overcome dry skin. The Gel is one of the topical dosage forms suitable for acne medications and oily skin types. This study aimed to determine the effect of variations in horse milk content formulated in gel preparations with carbomer 1% base as gelling agents on physical characteristics (organoleptic, viscosity, pH) and antibacterial activity in Propionibacterium acnes. In this study, gel preparations were made with six different formulas on horse milk content, namely FI (2.5%), FII (5%), and FIII (10%), FIV (15%), FV (20%), and FVI (25%) with 1% carbomer base on each formula and well method were used for the antibacterial test. From the organoleptic test, it was found that in all of the gel formula had soft textured, thick white color, and distinctive aroma like horse milk. The viscosity test showed that was no significant difference, but the pH test showed a significant difference for each formula. In this study showed that all of the gel formulae did not have an inhibitory zone, which means that at each level there was no evidence of antibacterial activity in the P. acnes. So, it could be concluded that all gel formula had good gel characteristics but there was no inhibitory activity against the P. acnes.