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Chemical peelings

Magdalini Soupioni, Sofia Maragkou, Alexandra Psarologou, Athanasios A Koutinas
The current investigation reveals new findings concerning the substantial promotional activity of orange juice, orange peel and molasses on whey fermentation using single cell culture of kefir microflora. Specifically, the addition in whey of only 1 % v/v orange juice or 1% v/v molasses - 4% w/v orange peel reduced the fermentation time to 10 from 70 hours. But the lowest fermentation time (9 h) was observed when a composite biocatalyst consisted of cells entrapped with orange peel in corn starch gel was used, where also the highest 14 C-labeled lactose uptake rate by kefir was recorded...
February 2019: Heliyon
Guangyu Shi, Yizhu Qian, Fengzhi Tan, Weijie Cai, Yuan Li, Yafeng Cao
Oil/water separation is a field of high significance as it might efficiently resolve the contamination of industrial oily wastewater and other oil/water pollution. In this paper, an environmentally-friendly hydrophobic aerogel with high porosity and low density was successfully synthesized with renewable pomelo peels (PPs) as precursors. Typically, a series of sponge aerogels (HPSA-0, HPSA-1 and HPSA-2) were facilely prepared via high-speed dispersion, freeze-drying and silanization with methyltrimethoxysilane...
February 2019: Royal Society Open Science
Deepashree Daulatabad, Soni Nanda, Chander Grover
[This corrects the article on p. 161 in vol. 11, PMID: 30533995.].
October 2018: Journal of Cutaneous and Aesthetic Surgery
Xolile Fuku, Mmalewane Modibedi, Nolubabalo Matinise, Portia Mokoena, Nqobile Xaba, Mkhulu Mathe
Carbon dioxide (CO2 ) is considered a useful greenhouse gas that can be captured and be used in the electro-syntheses of useful chemicals or fuels. On the other hand, there's also a tremendous interest on ethanol beneficiation as it is largely produced from crops, and it is regarded as a potential candidate for low temperature fuel cell applications. Although ethanol possesses good advantages, its resistant to oxidation poses a threat. The main objective of the study is to synthesis bio-inspired metal oxide-support catalyst which will help enhance the activity, efficiency and selectivity of Pd catalyst in CO2 reduction, Fuel cell performance and ethanol oxidation...
March 11, 2019: Journal of Colloid and Interface Science
Yi Xiao, Liping Chen, Danrong Jing, Yuxuan Deng, Xiang Chen, Juan Su, Minxue Shen
Background: There have been few studies on economic evaluation of acne treatments. Chemical peel (CP), a treatment approach primarily aimed at removing acne hyperpigmentation and scarring, is gradually accepted in the Chinese market. Objectives: This study aimed to detect willingness-to-pay (WTP) and to conduct a benefit-cost analysis for CP treatment among Chinese acne patients. Materials and methods: The costs were obtained from the patient's perspective and compared with benefits...
2019: Patient Preference and Adherence
Shahira M Ezzat, Mai Raslan, Maha M Salama, Esther T Menze, Seham S El Hawary
ETHNOPHARMACOLOGICAL RELEVANCE: Cucumis melo var. cantalupensis and Cucumis melo var. reticulatus are the most famous varieties of netted muskmelon or cantaloupe in Egypt. Cantaloupe has a great reputation as an anti-inflammatory drug for hot inflammation of liver, cough, eczema, and kidney disorders such as ulcers in the urinary tract, and our objective was to confirm this use scientifically. MATERIALS AND METHODS: Inflammation was induced in adult male Sprague Dawley rats by subcutaneous injection of 0...
March 8, 2019: Journal of Ethnopharmacology
Monica Boen, Carolyn Jacob
BACKGROUND: An unfortunate consequence of acne vulgaris is residual scarring that can negatively affect a patient's quality of life. OBJECTIVE: Jacob and colleagues have previously described an acne scar classification system based on acne scar pathology that divided atrophic acne scars into icepick, rolling, and boxcar scars, and this review will evaluate new and developing treatment options for acne scarring. METHODS: A Medline search was performed on the various treatments for acne scars, and particular attention was placed on articles that used the acne scar classification system of icepick, rolling, and boxcar scars...
March 2019: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
Fatma Tomul, Yasin Arslan, Funda Turgut Başoğlu, Yurdaer Babuçcuoğlu, Hai Nguyen Tran
This work developed an innovative activated carbon (ICAC) derived from orange peels (OP) through chemical activation using FeCl3 . The traditional activated carbon (PCAC) that was prepared through K2 CO3 activation served as a comparison. Three adsorbents (ICAC, PCAC, and OP) were characterized by various techniques, these being: Brunauer-Emmett-Teller (BET) surface area analysis, thermo-gravimetric analysis, X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy, and Fourier transform infrared spectroscopy...
March 7, 2019: Journal of Environmental Management
Mona H Aboul-Einien, Soha M Kandil, Ebtsam M Abdou, Heba M Diab, Marwa S E Zaki
Vitamin C (L-Ascorbic acid) has many favorable effects on the skin such as antioxidant, anti-aging and whitening effects. Its instability and low permeability limit its pharmaceutical use in cosmetic and dermatological products. Instead, Mg ascorbyl phosphate (MAP), an ascorbic acid derivative, has the same effect with higher stability is being used. In this work, a vesicular system, aspasomes, containing MAP was developed and evaluated. Aspasomes are multilayered vesicles formed by amphiphiles molecules, Ascorbyl palmitate (ASP), in combination with cholesterol and charged lipids for drug encapsulation...
March 1, 2019: Journal of Liposome Research
M Carmen González-Mas, José L Rambla, M Pilar López-Gresa, M Amparo Blázquez, Antonio Granell
The essential oil fraction obtained from the rind of Citrus spp. is rich in chemical compounds of interest for the food and perfume industries, and therefore has been extensively studied during the last decades. In this manuscript, we provide a comprehensive review of the volatile composition of this oil fraction and rind extracts for the 10 most studied Citrus species: C. sinensis (sweet orange), C. reticulata (mandarin), C. paradisi (grapefruit), C. grandis (pummelo), C. limon (lemon), C. medica (citron), C...
2019: Frontiers in Plant Science
Ana Karen Tovar, Luis A Godínez, Fabricio Espejel, Rosa-María Ramírez-Zamora, Irma Robles
The aim of this study was to optimize the integral valorization of orange peel waste by obtaining activated carbon after a process of pectin recovery in recycling of orange peel by transformation to value-added products of pectin extraction and activated carbon preparation. The study was supported by statistical analysis, and the significant factors and optimal conditions were obtained from the statistical analysis. Using a representative sample of orange peel waste, a yield of 29.37% pectin was recovered at the optimal operating conditions (phosphoric acid as the extraction agent, 95 °C as the impregnation temperature and a 2-hour extraction time)...
February 15, 2019: Waste Management
Robert C Sinclair, James L Suter, Peter V Coveney
Mechanical exfoliation techniques are widely used to create high quality graphene samples for analytical use. Increasingly, mechanical methods are used to create large quantities of graphene, yet there is surprisingly little molecular insight into the mechanisms involved. We study the exfoliation of graphene with sticky tape using molecular dynamics. This is made possible by using a recently developed molecular dynamics forcefield, GraFF, to represent graphene's dispersion interactions. For nano-sized flakes we observe two different mechanisms depending on the polymer-adhesive used...
February 25, 2019: Physical Chemistry Chemical Physics: PCCP
Nesrin M Fayek, Mohamed A Farag, Azza R Abdel Monem, Mohamed Y Moussa, Samia M Abd-Elwahab, Nebal D El-Tanbouly
Citrus plants are one of the most economical fruit bearing trees grown worldwide for their medicinal use as well as for the flavor and food industry. This study attempts to characterize the metabolome difference in polyphenols of four Citrus species fruit peels; C. reticulata Blanco cv. Egyptian, C. sinensis (L.) Osbeck cv. Olinda Valencia, C. aurantiifolia Swingle cv. Mexican and C. paradisi Macfad. cv. Duncan via ultra-performance liquid chromatography coupled with quadrupole-time-of-flight-mass spectrometry platform...
February 23, 2019: Journal of Chromatographic Science
Jung-Hyun Shim, Jung-Il Chae, Seung-Sik Cho
Citrus junos Seib ex TANAKA possesses various biological effects. It has been used in oriental remedies for blood circulation and the common cold. Recently, biological effects of C. junos peel have been reported. However, optimization of the biological properties of C. junos peel preparations has yet to be reported on. We developed a high-performance liquid chromatography (HPLC) method for quantification of the active constituents in C. junos peel. Hot water and ethanolic extracts of C. junos peel were prepared and their chemical profiles and biological activities were evaluated...
February 14, 2019: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Mekhala D K Vithana, Zora Singh, Stuart K Johnson
There is a demand for feasible methodologies that can increase/ maintain the levels of health-promoting phytochemicals in horticultural produce, due to strong evidence that these compounds can reduce risk of chronic diseases. Mango (Mangifera indica L.), ranks fifth among the most cultivated fruit crops in the world, is naturally rich in phytochemicals such as lupeol, mangiferin and phenolic acids (eg. gallic acid, chlorogenic acid and vanillic acid). Yet, there is still much scope for up-regulating the levels of these compounds in mango fruit through manipulation of different pre- and postharvest practices that affect their biosynthesis and degradation...
February 5, 2019: Journal of the Science of Food and Agriculture
Bruna Klein, Fabio Rodrigo Thewes, Anese Rogério de Oliveira, Auri Brackmann, Juliano Smanioto Barin, Alexandre José Cichoski, Roger Wagner
A method to extract apple peel wax was developed using the dispersive solvent extraction technique and applied to four apple cultivars (Royal Gala, Pink Lady®, Red Delicious, and Granny Smith). Different variables of the method were optimized, namely type and volume of extraction and dispersive solvents, ionic strength, and use of ultrasound. Extracts were evaluated as gravimetric yield of wax and composition as determined by gas chromatography. Optimized conditions provided yields higher than 95%. In a repeatability assay, the relative standard deviation for the extracted wax content was <3%...
February 2019: Food Research International
Subramani Kaipannan, Sathish Marappan
Hydrated Ni(OH)2 and activated carbon based electrodes are widely used in electrochemical applications. Here we report the fabrication of symmetric supercapacitors using Ni(OH)2 nanosheets and activated carbon as positive and negative electrodes in aqueous electrolyte, respectively. The asymmetric supercapacitors stack connected in series exhibited a stable device voltage of 9.6 V and delivered a stored high energy and power of 30 mWh and 1632 mW, respectively. The fabricated device shows an excellent electrochemical stability and high retention of 81% initial capacitance after 100,000 charge-discharges cycling at high charging current of 500 mA...
January 31, 2019: Scientific Reports
Muhammad Ali, Muhammad Imran, Muhammad Nadeem, Muhammad Kamran Khan, Muhammad Sohaib, Hafiz Ansar Rasul Suleria, Reeja Bashir
BACKGROUND: Fish meat and its products are usually accepted as good source of biological high value food components and especially for polyunsaturated fatty acids. The quality of fish meat products is considered to be decreased by the lipid peroxidation which leads to reduction in nutritional quality, financial loss and severe health problems. Many tactics are present to reserve their quality and safety. In the present investigation, the extraction and supplementation of optimal total polyphenol extracts (TPC) from vegetable and fruit by- products was explored for lipids oxidative stability and sensoric acceptability of functional fish product samples...
January 31, 2019: Lipids in Health and Disease
Ruizhi Wang, David G Purdie, Ye Fan, Fabien C-P Massabuau, Philipp Braeuninger-Weimer, Oliver J Burton, Raoul Blume, Robert Schloegl, Antonio Lombardo, Robert S Weatherup, Stephan Hofmann
Hexagonal boron nitride (h-BN) is the only known material aside from graphite with a structure composed of simple, stable, non-corrugated atomically thin layers. While historically used as lubricant in powder form, h-BN layers have become particularly attractive as an ultimately thin insulator, barrier or encapsulant. Practically all emerging electronic and photonic device concepts currently rely on h-BN exfoliated from small bulk crystallites, which limits device dimensions and process scalability. We here focus on a systematic understanding of Pt catalysed h-BN crystal formation, in order to address this integration challenge for mono-layer h-BN via an integrated chemical vapour deposition (CVD) process that enables h-BN crystal domain sizes exceeding 0...
January 14, 2019: ACS Nano
Wanying He, Xiaoyan Li, Ying Peng, Xiaoyan He, Siyi Pan
Here, we investigated the anti-oxidant and anti-melanogenic effects of pomelo peel essential oil (PPEO) from pomelo cv. Guan Xi. The volatile chemical composition of PPEO was analyzed with gas chromatography⁻mass spectrometry (GC/MS). The most abundant component of PPEO was limonene (55.92%), followed by β-myrcene (31.17%), and β-pinene (3.16%). PPEO showed strong anti-oxidant activities against 1,1-diphenyl-2-picryhydrazyl (DPPH) (,2,2'-azinobis-(3-ethylbenzthiazoline-6-sulphonate) (ABTS) (, and superoxide anion free radicals...
January 10, 2019: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
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