• Title/Summary/Keyword: Preservative System

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Study of Natural Preservative System Using the Mixture of Scutellariae radix, Acacia nilotica and Citrus reticulata Extracted from Polyhydric Alcohols (다가알코올로부터 추출된 황금, 아카시아, 한라봉 추출물의 천연 방부시스템 연구)

  • Park, Sung-Min;Lee, Kyeong-Ah;Yun, Mi-Young;Kim, Young-Jae;Lee, Sang-Hwa
    • KSBB Journal
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    • v.26 no.6
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    • pp.533-537
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    • 2011
  • The aim of this study was to develop a new natural preservative system to improve the weak points of natural polyhydric alcohols together with the efficiency of natural plants as a preservative. Polyhydric alcohols (glyceryl caprylate and ethylhexylglycerin) and antimicrobial plants (S. radix, A. nilotica and C. reticulata) were tested using the disc diffusion method and minimum inhibitory concentration (MIC) method for their antimicrobial activity against the common poultry pathogens, respectively. A study of the preservative efficacy of the cosmetic formulations containing the optimized preservative system demonstrated sufficient preservative efficacy against bacteria and eukaryotic test microbes. These results suggest that the natural preservative system including polyhydric alcohol extracts containing natural plants could be incorporated in cosmetic formulations.

Improvement of Antifungal Activity of for Water-Dispersed Cosmetic Formulations (수분산 제형의 화장품에 대한 항진균력 향상)

  • Lee, Ye Ji;Seo, Jae Yong;Yang, Hyeon Gap;Lee, Ju kyeong;Baek, Sol Bee;Cho, Hyun Dae;Jeong, Noh Hee
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.48 no.2
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    • pp.135-146
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    • 2022
  • In order to prevent microbial contamination and safely use cosmetics, it is essential to possess preservative power. In this study, the antifungal effect was confirmed by improving the preservative system of the aqueous dispersion formulation, which has a weak preservative power against fungi, and various preservative systems were established to strengthen the preservative power against fungi. Five kinds of raw materials (sodium anisate, p-anisic acid, caprylhydroxamic acid, o-cymen-5-ol, hydroxyacetophenone) that have a benzene ring structure having a hydroxyl group and exist as protonated form in cosmetic formulations expected to improve antifungal activity in cosmetics were selected, and the minimum growth inhibitory concentration of the raw materials was determined through MIC assay. It was confirmed that the preservative power against mold was improved through the preservative efficacy test of 4 types of water dispersion formulations (cream, lotion, toner, and sun cream) in which 4 types of raw materials showing antimicrobial activity against mold were added to the preservative system. When p-anisic acid was used, it was confirmed that the preservative activity against mold was strengthened without the effect of inhibiting the preservative power against bacteria and yeast in all four formulations.

The Study of Preservative System in Cosmetics using Botanical Antimicrobial (식물유래 천연항균제를 이용한 화장품에서의 방부시스템에 관한 연구)

  • Shim, Seung-Bo
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.9 no.5
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    • pp.1344-1348
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    • 2008
  • Anti-microbial activities of Scutellariae Radix Extracts and Sophora flavecens Extracts was tested by formulation, such as skinsoftener, emulsion for 4 weeks. Control contained no preservative, test group contained 1.00% Scutellariae Radix extracts and 1.00% Sophora flavecens extracts and positive control contained parabens and imidazolidinyl urea. To determine the anti-microbial activity of these extract, the 4 germs such as Escherichia coil, Pseudomonas aeruginosa, Staphylococcus aures, Canida albicans were used. The test groups showed significant anti-microbial activities against the 4 germs at 2 and 3 weeks as compared with control. Anti-microbial activities of these extracts were similar to positive control. Considering that the Scutellariae Radix Extracts and the Sophora flavecens Extracts have a significant anti-microbial activities against 4 germs, it is possible as natural preservative in cosmetics.

Corrosion of Metals in Waterborne Preservative-Treated Wood (수용성(水溶性) 방부처리재(防腐處理材)에서 금속류(金屬類)의 부식(腐蝕))

  • Kim, Gyu-Hyeok;Kim, Jae-Jin
    • Journal of the Korean Wood Science and Technology
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    • v.20 no.1
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    • pp.15-22
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    • 1992
  • This study was performed to investigate the corrosion of metal fasteners in waterborne preservative-treated wood. Of all the metal tested, steel exhibited the greatest amount of corrosion across all preservatives and exposure conditions whereas stainless steel was totally inert. Galvanized steel corroded at a much lower rate compared to steel and the corrosion of brass was negligible. Among the preservatives, CCA-Type B was the most corrosive system tested. The sequence for the average corrosivity across all metals was: CCA-type B>CCA-Type C${\geq}$ACC${\geq}$CCA-Type A. Across all metals and retentions the salt formulations were more corrosive than the oxide and the corrosion was increased with the increse in the amount of preservative loadings. The amount of corrosion was also increased with the increase in exposure relative humidity (RH) across all metals and presevatives However, at the 60% RH exposure condition, the corrosion of metals was very negligible. Consequently, it can be concluded that across all metals oxide-type preservatives should be used to prevent the corrosion problem of metal fasteners in contact with treated wood and the use of steel nail preservative-treated wood should be avoided without distinction of end-use location, i.e., exterior or interior, and the use of stainless steel or at least brass nail in damp exterior condition was strongly recommended.

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Effects of Various Polyols on Antiseptic System in Emulsions (에멀젼 제형에서 수종의 폴리올이 방부 시스템에 미치는 영향)

  • Cho, Wan-Goo;Cho, Young-Jin
    • Journal of the Korean Applied Science and Technology
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    • v.25 no.4
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    • pp.477-484
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    • 2008
  • It is inevitable to use chemical germicidal agents like paraben, imidazolidinyl urea and phenoxyethanol to preserve the emulsions which is usually used in cosmetics. Although these chemical preservatives are good enough to reduce the microbiological contamination, they are irritative, allergenic to the skin. Several kinds of polyols are used in cosmetics as moisturizer and solvent. In this study, we evaluate the effects of polyols on anti-microbial activities, safety and resistant index. MIC(minimal inhibitory concentration) of polyols determined against 6 germs including Staphylococcus aureus. The order of MIC was PG $\cong$ DPG $\cong$ 1,3BG > HG > 1,2-PD > 1,2-HD $\cong$ 1,2-OD. The $2{\sim}3\;wt%$ of 1,2-HD(hexanediol) shows good anti-microbial effects in emulsions without allergenic response. Resistant index of 1,2-HD was less than 2 and this value was smaller than that of chemical preservatives. The mechanism of antimicrobilogical effect might be disturb the membrane of germs by investigating using electron microscope. Added to that, using this paradigm, low preservative contents, paraben-free system, and even preservative-free systems can be expected from these results.

A NOVEL ANTI-MICROBIAL COLLOIDAL SILVER SYSTEM AND ITS APPLICATION FOR COSMETICS

  • Kim, Jin-Woong;Kim, Su-Jin;Han, Sang-Hoon;Chang, Ih-Seop;Kang, Hak-Hee;Lee, Ok-Sub
    • Proceedings of the SCSK Conference
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    • 2003.09a
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    • pp.686-697
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    • 2003
  • A new colloidal silver (Ag) system is present in which a fine colloidal Ag is in situ deposited onto functionalized porous poly (ethylene glycol dimethacrylate) (poly (EGDMA)) microspheres. The effectiveness of Ag deposition was investigated considering the surface characteristics of poly (EGDMA) microspheres. The result reported in this study illustrates that the control of surface area and surface functionality (in this study, a hydroxyl group) of poly (EGDMA) microspheres is an important factor that determines practically the degree of deposition of colloidal Ag. The x-ray analysis showed that Ag nanoparticles were dispersed evenly inner and outer surfaces and had a face center cubic (fee) phase. In the preservative efficacy test, the Ag-containing poly (EGDMA) microspheres had a powerful anti-bacterial activity, showing a high potential for a new preservative in cosmetic industry.

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Comparison of Preservative Efficacy Tests for Water Non-dispersible Cosmetic Formulations (비수분산 특수 제형 화장품에 대한 방부력 시험 비교 연구)

  • Kim, Yong Hyun;Park, Sung Ha;Park, Byoung Jun;Shin, Kye Ho;Kang, Hak Hee
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.47 no.1
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    • pp.9-21
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    • 2021
  • In this study, the difference between the preservative efficacy test (PET) used for water dispersion formulations and PCPC (personal care products council) guidelines alternative test method, direct contact membrane method, and surface mold test should be studied to determine what should be considered during preservative efficacy test of water non-dispersible formulations. We conducted improved PETs when using the alternative test method compared with the test methods used for stick and pressed powder. There was no significant improvement between water-in-silicon emulsions and loose powder using alternative test methods. When we checked the results of the presence and absence of the preservative system for each product, we could see that there were differences in testing methods. As a result, improved levels of results could be obtained using both existing and alternative test methods when measuring preservatives for water non-dispersible formulations. In addition, in the case of stick and pressed powder, the results were more effective when the preservative test method applied to the consumer's method of use was applied.

Evaluation of Preservative Efficiacy for Refractory Wood Species in Field Tests and Its Implication for Korean Wood Preservation Industry (야외시험을 통한 난주입수종의 방부성능 평가 및 국내 목재보존산업에서의 시사점)

  • Ra, Jong Bum;Ingram, Janet;Wang, Jieying;Morris, Paul I.
    • Journal of the Korean Wood Science and Technology
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    • v.45 no.5
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    • pp.544-558
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    • 2017
  • The objective of this research is to investigate preservative efficacy for refractory species in field tests. The field tests were set up to evaluate the preservative performance of western hemlock and white spruce preservative-treated to the residential products group C and D of Canadian standard (CSA O80 Series-08) that have been developed for residential use in above-ground and ground-contact conditions, respectively. They were incised and pressure-treated with alkaline copper quaternary (ACQ) or copper azole (CA). Treated samples for the ground contact stake test and ground proximity test were installed in Jinju, Korea on November 2010 according to AWPA E7-09 and AWPA E18-06, respectively. Each sample has been annually assigned ratings for decay and termite attack, based on AWPA E7 grading system. After six years and five months of exposure, the untreated samples showed decay and particularly severe damage by termite attack but all the preservative-treated samples showed no decay. The results showed that the 5-mm penetration depths may be applicable for the treatment of refractory species. This paper discusses what to consider for the use of refractory species in Korean wood preservation industry from the penetration and retention points of view.

Preservative Efficacies according to the Composition of 1, 3-Butylene Glycol and Alkane Diols in Cosmetics (화장품에서 1,3-부틸렌 글라이콜 및 알칸디올계 조성에 따른 방부력에 관한 연구)

  • Suh, Ji Young;Yun, Mid Eum;Lee, Ye Seul;Xuan, Song Hua;Park, Dong Soon;Park, Soo Nam
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.44 no.4
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    • pp.363-373
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    • 2018
  • In recent years, parabens used as preservatives in cosmetics have become a problem of human safety. Therefore, in this study, we tried to evaluate the preservative efficacy of 1,3-butylene glycol, 1,2-hexanediol, and 1,2-pentanediol as a preservative system to replace parabens. 1,3-Butylene glycol was added to cosmetic creams at a concentration of between 5 and 25%. The preservative efficacy of 1,3-butylene glycol was determined using a M-3 challenge test, as recommended by the Personal Care Products Council (formally CTFA). The alkane diols, such as 1,2-hexanediol and 1,2-pentanediol, were assessed in a similar manner. An evaluation of the preservative efficacy of 1,3-butylene glycol revealed that it was effective against all tested microbial strains at a concentration of 25%. We also investigated the efficacy of combinations of 0.3% phenoxyethanol and 0.1% ethylhexylglycerin. Finally, we tested the alkane diols, including 1,2-hexanediol and 1,2-pentanediol, as an alternative to the preservative 0.3% phenoxyethanol. Both 1% 1,2-hexanediol and 1% 1,2-pentanediol demonstrated preservative efficacy. Taken together, our study demonstrated that the formulation of 25% 1,3-butylene glycol and 0.1% ethylhexylglycerin, 1% 1,2-hexanediol, and 1% 1,2-pentanediol had the best preservative efficacy of the compositions tested. Thus, this study suggests that the formulation is a possibility of substituting parabens preservatives, which has been used in cosmetics and has become a safety issue.

Preliminary Study of the Leaching Resistance of Boron from Borate Treated Wood by the Dual Treatment with Water-Repellent Preservative and Methyl Metacrylate (방부성(防腐性) 발수제(撥水劑)와 methyl metacrylate 이중처리(二重處理)에 의(依)한 붕소화합물(硼素化合物) 처리재(處理材)로부터 붕소(硼素)의 용탈(溶脫) 저항성(抵抗性)에 관(關)한 기초연구(基礎硏究))

  • Kim, Gyu-Hyeok;Ra, Jong-Bum
    • Journal of the Korean Wood Science and Technology
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    • v.22 no.4
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    • pp.13-18
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    • 1994
  • Sapwood samples of pitch pine were treated with disodium octaborate alone by dip-diffusion, or in combination with water-repellent preservative(WRP) and methyl metacrylate(MMA). Treated samples were subjected to an accelerated leaching test for determining the improvement of leaching resistance and to soft rot and mold tests for evaluating the increase in bioefficacy, due to the addition of WRP and MMA applied as a second treatment. The addition of WRP and MMA retarded leaching of boron to some extent from treated samples and this retardation can be explained by improved water repellency of WRP and MMA treated samples. Borate /WRP and borate /MMA systems will not qualify borate treated wood for ground and fresh water contact use but may improve performance of borate treated wood in above-ground applications not subjected to continuous wetting conditions. Bioefficacy against soft rot fungi and mold fungi was improved by a second treatment with WRP. However, improvement in the performance of borate /MMA systems was not observed. Considering improvement in both resistance of leaching and bioefficacy against micro fungi by the treatment of WRP and MMA, simultaneously, the dual treatment of borate treated wood by MMA containing co-biocides might be believed as an ideal treatment system.

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