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Chemical peeling

Katayoun Mahdavi Ara, Farhad Raofie
Essential oils and volatile components of pomegranate (Punica granatum L.) peel of the Malas variety from Meybod, Iran, were extracted using supercritical fluid extraction (SFE) and hydro-distillation methods. The experimental parameters of SFE that is pressure, temperature, extraction time, and modifier (methanol) volume were optimized using a central composite design after a (2(4-1)) fractional factorial design. Detailed chemical composition of the essential oils and volatile components obtained by hydro-distillation and optimum condition of the supercritical CO2 extraction were analyzed by GC-MS, and seventy-three and forty-six compounds were identified according to their retention indices and mass spectra, respectively...
July 2016: Journal of Food Science and Technology
Taous Saraoui, Josiane Cornet, Emilie Guillouet, Marie France Pilet, Frédérique Chevalier, Jean-Jacques Joffraud, Françoise Leroi
Tropical shrimp is of considerable economic importance in the world but is highly perishable due to microbial and chemical degradation. Biopreservation is a food preservation technology based on the addition of "positive" bacteria able to kill or prevent the growth of undesirable microorganisms. Two strains of lactic acid bacteria (LAB) have previously been selected for a biopreservation strategy: Lactococcus piscium CNCM I-4031, for its ability to prevent the sensory deterioration of seafood and Carnobacterium divergens V41, which inhibits growth of Listeria monocytogenes...
October 3, 2016: International Journal of Food Microbiology
Ichiro Kurokawa, Naoki Oiso, Akira Kawada
The standard management of acne vulgaris in Japan includes a combination of topical treatment with benzoyl peroxide (BPO) and BPO/clindamycin (CLDM), topical adapalene and systemic antimicrobials. However, the treatment of therapy-resistant complications such as postinflammatory hyperpigmentation (PIH), erosions with inflamed red papules and atrophic scars has not been established. We performed chemical peeling with glycolic acid and iontophoresis with ascorbyl 2-phosphate 6-palmitate and DL-α-tocopherol phosphate for the treatment of PIH, erosions with inflamed red papules and non-inflamed atrophic scars in 31 patients with acne vulgaris (mild to severe severity), and evaluated the efficacy and safety of these interventions...
October 15, 2016: Journal of Dermatology
Micaela A R Soares, Margarida J Quina, Marco S Reis, Rosa Quinta-Ferreira
This study aims to investigate the co-composting of an inorganic industrial waste (eggshell - ES) in very high levels (up to 60% w/w). Since composting is a process in which solid, liquid and gaseous phases interact in a very complex way, there is a need to shed light on statistical tools that can unravel the main relationships structuring the variability associated to this process. In this study, PCA and data visualisation were used with that purpose. The co-composting tests were designed with increasing quantities of ES (0, 10, 20, 30 and 60%ES w/w) mixed with industrial potato peel and rice husks...
October 7, 2016: Waste Management
Qingliang Zhao, Cuixia Dai, Shanhui Fan, Jing Lv, Liming Nie
Salicylic acid (SA) has been frequently used as a facial chemical peeling agent (FCPA) in various cosmetics for facial rejuvenation and dermatological treatments in the clinic. However, there is a tradeoff between therapeutic effectiveness and possible adverse effects caused by this agent for cosmetologists. To optimize the cosmetic efficacy with minimal concentration, we proposed a chemical permeation enhancer (CPE) azone to synergistically work with SA on human skin in vivo. The optical properties of human skin after being treated with SA alone and SA combined with azone (SA@azone) were successively investigated by diffuse reflectance spectroscopy (DRS) and optical coherence tomography (OCT)...
October 10, 2016: Scientific Reports
Xiu-Min Chen, Andrew R Tait, David D Kitts
Dried citrus peel derived from Citrus reticulata, also called "chenpi", possesses a complex mixture of flavonoids and has a history of traditional use to treat a variety of digestive disorders. We compared three sources of conventional chenpi from California (USA), Guangxi, Zhejiang, and two sources of "nchenpi", which contain greater nobiletin content, from Sichuan and Xinhui (China). Xinhui orange peel extract (OPE) had highest content of polymethoxylated flavones, along with greatest capacity to scavenge 2,2-azino-bis(3-ethylbenzthiazoline-6-sulphonic acid) (ABTS), 2,2-diphenyl-1-pcrylhydrazyl (DPPH), and 2,2'-azobis-2-methyl-propanimidamide, dihydrochloride (AAPH) radicals and nitric oxide (NO)...
March 1, 2017: Food Chemistry
Deepak Pant, Tenzin Dolker
The research reports a novel green method to use citrus fruits for the management of spent NMC based lithium ion batteries (LIBs). Citrus fruit juice (CJ) can provide an excellent chemical combination to remove the binder and support the leaching with efficiency in between 94% to 100%. CJ have many advantages in LIBs recycling as an economic and green method due to rich in many organic acids like citric and malic acid as complexing agents with ascorbic acid and citrus flavonoids, for the reduction of many heavy metals...
September 30, 2016: Waste Management
Ana Rodríguez, Josep E Peris, Ana Redondo, Takehiko Shimada, Leandro Peña
We have categorized the dataset from content and emission of terpene volatiles of peel and juice in both Navelina and Pineapple sweet orange cultivars in which D-limonene was either up- (S), down-regulated (AS) or non-altered (EV; control) ("Impact of D-limonene synthase up- or down-regulation on sweet orange fruit and juice odor perception"(A. Rodríguez, J.E. Peris, A. Redondo, T. Shimada, E. Costell, I. Carbonell, C. Rojas, L. Peña, (2016)) [1]). Data from volatile identification and quantification by HS-SPME and GC-MS were classified by Principal Component Analysis (PCA) individually or as chemical groups...
December 2016: Data in Brief
S O Dahunsi, S Oranusi, J B Owolabi, V E Efeovbokhan
This study evaluated the potentials of fluted pumpkin fruit peels for biogas generation using three different pre-treatment methods (A, B, C) and the optimization of its process parameters. The physic-chemical characteristics of the substrates revealed it to be rich in nutrients and mineral elements needed by microorganisms. Gas chromatography analysis revealed the gas composition to be within the range of 58.5±2.5% Methane and 27±3% Carbon dioxide for all the three digestions. The study revealed that combination of three pre-treatment methods enhanced enormous biogas yield from the digested substrates as against the use of two methods and no pre-treatment experiment...
December 2016: Bioresource Technology
Yuuka Fukui, Daiki Sakai, Keiji Fujimoto
We carried out surface-grafting from proteins and their assembling into objects with unique nanostructured materials (nano-objects). To immobilize polymer-initiating sites, amino groups of bovine serum albumin (BSA) were allowed to react with iniferter groups (BSA-i). Then, graft polymerization of N-isopropyl acrylamide (NIPAM) was performed by light-initiated living radical polymerization from immobilized iniferter moieties of BSA-i. The polymer-grafted BSA (BSA-g-PNIPAM) was assembled into nano-objects through the precipitation of PNIPAM graft chains and their sizes and morphologies were tuned by the chain length, the density and the chemical structure of graft polymers in addition to the environmental conditions such as temperature and pH...
September 23, 2016: Colloids and Surfaces. B, Biointerfaces
Luigi Aliberti, Lucia Caputo, Vincenzo De Feo, Laura De Martino, Filomena Nazzaro, Lucéia Fátima Souza
Citrus medica cv. 'liscia' and C. medica cv. 'rugosa' are two taxa of citron, belonging to the biodiversity of South Italy, in particular of Amalfi Coast, in the Campania region. The chemical composition of the essential oils (EOs) from fruit peels of both C. medica cultivars was studied by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS) analyses. In all, 100 compounds were identified, 82 for C. medica cv. 'liscia', accounting for 91.4% of the total oil, and 88 for C. medica cv. 'rugosa', accounting for 92...
2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Xiuwen Guan, Zhaopei Guo, Lin Lin, Jie Chen, Huayu Tian, Xuesi Chen
A facile strategy is developed to construct an ultrasensitive pH triggered charge/size dual-rebound gene delivery system for efficient tumor treatment. Therapeutic gene is complexed by polyethylenimine (PEI) and poly-L-glutamate (PLG), further in situ tightened by aldehyde modified polyethylene glycol (PEG) via Schiff base reaction. The generated Schiff base bonds are stable in neutral pH but cleavable in tumor extracellular pH. This gene delivery system possesses following favorable properties: (1) the tunable gene delivery system is constructed by chemical bench-free "green" and fast process which is favored by clinician, (2) PEG crosslinking shields the surface positive charges and tightens the complex particles, leading to decreased cytotoxicity, improved stability and prolonged circulation, (3) PEG shielding can be rapidly peeled off by acidic pH as soon as arriving tumors, (4) dual charge/size ultrasensitively rebounding to higher positive potential and bigger size enhances tumor cell uptake efficiency...
September 19, 2016: Nano Letters
Mark B Taylor, Lisa Zaleski-Larsen, Timothy A McGraw
BACKGROUND: Successful treatment of acne scars is challenging. Many modalities have been used with marginal success. OBJECTIVE: The authors describe a combination of a superficial chemical peel, subcision, and fractional carbon dioxide (CO2) laser resurfacing in a single-treatment session as a novel treatment approach for rolling acne scars. METHODS: A total of 114 patients (75 women and 39 men) with predominantly rolling acne scars were treated with a 20% trichloracetic acid chemical peel, subcision with a novel dissecting instrument, and the CO2 laser under tumescent anesthesia...
September 14, 2016: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
Megan Brown
Part 1 of this series highlighted some of the potential complications that have been associated with soft tissue augmentation and botulinum toxin injections. In part 2, tips for how dermatology residents may prevent, identify, and manage complications from lasers and chemical peels for optimal patient outcomes are provided.
August 2016: Cutis; Cutaneous Medicine for the Practitioner
Suzanne Bruce, Wendy Roberts, Craig Teller, Lora Colvan
BACKGROUND: Chemical peels are versatile treatments that involve chemical exfoliation of the skin for cosmetic improvement. Deeper peels produce more significant results, but can be associated with longer healing time and potential complications. Novel chemical resurfacing treatments (AGE and MELA) were developed in Europe to produce skin resurfacing via controlled inflammation to promote cell regeneration with minimum negative effects associated with conventional peelings. The AGE Resurfacing regimen is indicated for the treatment of photoaging, and consists of multi-ingredient peeling solution with trichloroacetic acid, pyruvic acid, salicylic acid, mandelic acid, and lactobionic acid...
September 1, 2016: Journal of Drugs in Dermatology: JDD
Çiğdem Ay, Asiye Safa Özcan, Yunus Erdoğan, Adnan Özcan
The aim of the present study was to enhance the biosorption capacity of a waste biomass of Punica granatum L. peels (PGL) using various chemical modification agents. Among these agents, hexamethylenediamine (HMDA) indicated the best performance with regards the improvement of lead(II) ions removal from aqueous solution. The characterization of HMDA modified Punica granatum L. peels (HMDA-PGL) was achieved by using elemental analysis, FT-IR, thermogravimetric (TG) analysis and zeta potential measurement techniques...
September 3, 2016: International Journal of Phytoremediation
Lien Verhulst, An Goossens
Immediate skin reactions are common in dermatological practice, but may often be overlooked. The main objective of this article is to provide an update of the literature concerning immediate-type reactions or contact urticaria/contact urticaria syndrome caused by cosmetic ingredients in terms of immediate clinical symptoms, positive reactions following open, scratch but, most often, prick testing, and sometimes the detection of specific IgE antibodies. To this end, a selective search in different medical literature databases was performed...
September 4, 2016: Contact Dermatitis
Brian W Lee, Robert A Schwartz, Camil K Janniger
Melasma is a common acquired hypermelanosis that primarily affects women of skin type IV-VI. It tends to appear on sun-exposed areas of face and neck. The exact pathogenesis is linked with many factors include ultraviolet radiation, pregnancy, hormonal activity, thyroid abnormalities, and medications. Melasma, which involves increased melanin production and melanocytosis, may be principally epidermal, dermal, or mixed. Mainstays of treatment include topical hypopigmenting agents, lasers, chemical peels, and dermabrasion...
September 2, 2016: Giornale Italiano di Dermatologia e Venereologia: Organo Ufficiale, Società Italiana di Dermatologia e Sifilografia
Surabhi Dayal, Ashish Amrani, Priyadarshini Sahu, Vijay Kumar Jain
INTRODUCTION: Chemical peeling is a well-identified therapeutic modality for acne vulgaris (AV). Jessner's solution (JS) is a known peeling agent for acne since more than 100 years. Salicylic acid (SA) peel is a well-established peeling agent for acne. There is paucity of literature comparing the current peeling agents of choice, that is, SA with the older peeling agents, that is, JS for acne. OBJECTIVE: To compare the efficacy and safety of 30% SA vs. JS peels in treatment of mild-to-moderate facial acne in Indian patients...
August 25, 2016: Journal of Cosmetic Dermatology
Anna Geraci, Vita Di Stefano, Enrica Di Martino, Domenico Schillaci, Rosario Schicchi
In this study, the orange peel of 12 cultivars of Citrus sinensis from central-eastern Sicily was employed to obtain essential oils and extracts. The ones were extracted through steam distillation, the others through extraction in hexane. Chemical constituents were evaluated in terms of qualitative and quantitative analyses by gas chromatography/mass spectrometry. Fifty-four components were identified in the steam essential oils and 44 in the extracts. In all the cultivars, the main component is d-limonene (73...
August 18, 2016: Natural Product Research
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