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https://www.readbyqxmd.com/read/28933738/anti-diabetic-effects-of-phenolic-extract-from-rambutan-peels-nephelium-lappaceum-in-high-fat-diet-and-streptozotocin-induced-diabetic-mice
#1
Qingyu Ma, Yan Guo, Liping Sun, Yongliang Zhuang
Recent studies have shown that rambutan peel phenolic (RPP) extract demonstrate high antioxidant and antiglycation activities in vitro and in vivo. This study further evaluated the anti-diabetic activity of RPP in a mouse model of Type II diabetes induced by streptozotocin combined with high-fat diet. Results showed that RPP increased the body weight and reduced the fasting blood glucose level of the diabetic mice. RPP significantly reduced the serum levels of total cholesterol, triglyceride, creatinine, and glycated serum protein in diabetic mice in a dose-dependent manner...
July 26, 2017: Nutrients
https://www.readbyqxmd.com/read/28928529/antioxidant-properties-and-phenolic-profile-characterization-by-lc-ms-ms-of-selected-tunisian-pomegranate-peels
#2
Mouna Abid, Héla Yaich, Salma Cheikhrouhou, Ibtihel Khemakhem, Mohamed Bouaziz, Hamadi Attia, M A Ayadi
Antioxidant contents and activities of different extracts from four Tunisian pomegranate peels, locally called "Acide", "Gabsi", "Nebli" and "Tounsi", were studied. Peels samples were extracted with three solvents (water, ethanol and acetone). For each extract, the total phenol contents and antioxidant activity were evaluated. The highest values of polyphenol, tannins, flavonoids and anthocyanins were recorded in the acetone extract of Acide ecotype with 304.6 mg gallic acid equivalent/g; 292.23 mg gallic acid equivalent/g; 15...
August 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28911634/extraction-and-quantification-of-polyphenols-from-kinnow-citrus-reticulate-l-peel-using-ultrasound-and-maceration-techniques
#3
Muhammad N Safdar, Tusneem Kausar, Saqib Jabbar, Amer Mumtaz, Karam Ahad, Ambreen A Saddozai
An investigation was carried out to extract polyphenols from the peel of kinnow (Citrus reticulate L.) by maceration and ultrasound-assisted extraction (UAE) techniques. The antioxidant potential of these polyphenols was evaluated using ferric reducing antioxidant power (FRAP), 2,2-diphenyl-1-picrylhydrazyl (DPPH), and superoxide radical scavenging assays; and their antimicrobial activity was assessed against bacterial strains Staphyloccoccus aureus, Bacillus cereus, and Salmonella typhimurium. The highest extraction yield was obtained through the solvent ethanol at 80% concentration level, whereas UAE was a more efficient technique and yielded comparatively higher polyphenol contents than maceration...
July 2017: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/28885688/changes-in-physiological-and-some-nutritional-nutraceuticals-chemical-physical-microbiological-and-sensory-quality-minimally-processed-cactus-pears-cvs-bianca-gialla-and-rossa-stored-under-passive-modified-atmosphere
#4
Amedeo Palma, Alberto Continella, Stefano La Malfa, Salvatore D'Aquino
BACKGROUND: Objective of this study was to compare the overall quality changes of minimally processed cactus pears cvs. 'Bianca', Gialla' and 'Rossa' stored at 4 °C for 10 d. Periodically in-package CO2 , O2 and C2 H4 were determined and fruit were assessed for overall quality changes (pH, acidity, sugars, phenolics, betacyanins and betaxantines, antioxidant capacity, colour, firmness, microbiological population and sensory attributes). In a preliminary study three different polymeric films were tested to select the most suitable to design a package with a short lag time to achieve steady state conditions...
September 8, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28869087/-chemical-peels-and-management-of-skin-aging
#5
M-L Pelletier-Louis
Chemical peels are an alternative and/or a complementary treatment to the surgical procedures for skin aging. The purpose of this article is to specify the procedures and the indications of the three principal types of chemical peels: alpha-hydroxy acids, trichloracetic acid, phenol-croton oil peel. The clinical examination will determine the depth of the lesions to treat and will take into consideration counter-indications and specific limits to each patient. Chemical peel is a four step procedure: pre-peel preparation, peeling itself, recovery phase and maintenance phase...
August 28, 2017: Annales de Chirurgie Plastique et Esthétique
https://www.readbyqxmd.com/read/28833143/antioxidant-properties-and-chemical-characterization-of-spanish-opuntia-ficus-indica-mill-cladodes-and-fruits
#6
Lucía Andreu, Nallely Nuncio-Jáuregui, Ángel A Carbonell-Barrachina, Pilar Legua, Francisca Hernández
BACKGROUND: Recent studies have demonstrated that consumption of Opuntia ficus-indica Mill has an important positive health benefit, mainly due to antioxidant properties, which justifies this research. This study examined antioxidant activity, organic acid and sugar profile, total phenolic and physicochemical characteristics of six Opuntia ficus-indica cultivars growing in the Spanish Mediterranean. It should be noted that in this research both, cladodes (young and adult) and fruits (peel and pulp) were analyzed...
August 21, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28802843/co-concentration-effect-of-silane-with-natural-extract-on-biodegradable-polymeric-films-for-food-packaging
#7
Anbreen Bashir, Sehrish Jabeen, Nafisa Gull, Atif Islam, Misbah Sultan, Abdul Ghaffar, Shahzad Maqsood Khan, Sadia Sagar Iqbal, Tahir Jamil
Novel biodegradable films were prepared by blending guar gum, chitosan and poly (vinyl alcohol) having mint (ME) and grapefruit peel (GE) extracts and crosslinked with nontoxic tetraethoxysilane (TEOS). The co-concentration effect of TEOS with natural extracts on the films was studied. FTIR analysis confirmed the presence of incorporated components and the developed interactions among the polymer chains. The surface morphology of the films by SEM showed the hydrophilic character due to porous network structure...
August 9, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28801720/functionalized-hydrothermal-carbon-derived-from-waste-pomelo-peel-as-solid-phase-extractant-for-the-removal-of-uranyl-from-aqueous-solution
#8
Feize Li, Yu Tang, Huilin Wang, Jijun Yang, Shoujian Li, Jun Liu, Hong Tu, Jiali Liao, Yuanyou Yang, Ning Liu
To develop a high-performance solid-phase extractant for the separation of uranyl f, pomelo peel, a kind of waste biomass, has been employed as carbon source to prepare carbonaceous matrix through low-temperature hydrothermal carbonization (200 °C, 24 h). After being oxidized by Hummers method, the prepared hydrothermal carbon matrix was functionalized with carboxyl and phenolic hydroxyl groups (1.75 mmol g(-1)). The relevant characterizations and batch studies had demonstrated that the obtained carbon material possessed excellent affinity toward uranyl (436...
August 11, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28732800/histological-case-control-study-of-peeling-induced-skin-changes-by-different-peeling-agents-in-surgically-subcutaneous-undermined-skin-flaps-in-facelift-patients
#9
P Gonser, S Kaestner, P Jaminet, K Kaye
A histological evaluation of peeling-induced skin changes in subcutaneous undermined preauricular facial skin flaps of nine patients was performed. There were three treatment groups: Trichloroacetic acid (TCA) 25%, TCA 40% and phenol/croton oil; one group served as control. Two independent evaluators determined the epidermal and dermal thickness and the depth of necrosis (micrometre). The percentual tissue damage due to the peeling was calculated, and a one-sample t-test for statistical significance was performed...
June 27, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28722812/chemical-profile-of-pineapple-cv-vit%C3%A3-ria-in-different-maturation-stages-using-electrospray-ionization-mass-spectrometry
#10
Elizângela M Ogawa, Helber B Costa, José A Ventura, Luiz Cs Caetano, Fernanda E Pinto, Bruno G Oliveira, Maria Eduarda S Barroso, Rodrigo Scherer, Denise C Endringer, Wanderson Romão
BACKGROUND: Pineapple is the fruit of Ananas comosus var. comosus plant, being cultivated in tropical areas and has high energy content and nutritional value. Herein, 30 samples of pineapple cv. Vitória were analyzed as a function of the maturation stage (0-5) and their physico-chemical parameters monitored. In addition, negative-ion mode electrospray ionization mass spectrometry [ESI(-)FT-ICR MS] was used to identify and semi-quantify primary and secondary metabolites present in the crude and phenolic extracts of pineapple, respectively...
July 19, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28667639/flavonoid-rich-agro-industrial-residues-for-enhanced-bacterial-laccase-production-by-submerged-and-solid-state-fermentation
#11
Aarjoo Sharma, Vijaya Gupta, Mussarat Khan, Sanjeev Balda, Naveen Gupta, Neena Capalash, Prince Sharma
Laccases have potential applications in industrial, biotechnological, and environmental set ups. Development of cost effective and efficient production technologies has gained significant attention in recent years. To enhance the laccase production from Rheinheimera sp. (Gram negative) using submerged fermentation (SmF) and from Lysinibacillus sp. (Gram positive) using solid-state fermentation (SSF), the inducing effect of various flavonoid-rich agro-industrial residues was investigated. Peels of citrus fruits, soybean meal, tofu dreg, lignin monomers, and lingo-cellulosic waste, used tea leaves and peels of onion and kiwi, paper, and dying industry effluents were tested as inducers...
July 2017: 3 Biotech
https://www.readbyqxmd.com/read/28664422/metabolite-profiling-of-red-and-blue-potatoes-revealed-cultivar-and-tissue-specific-patterns-for-anthocyanins-and-other-polyphenols
#12
Anne Oertel, Andrea Matros, Anja Hartmann, Panagiotis Arapitsas, Klaus J Dehmer, Stefan Martens, Hans-Peter Mock
Metabolite profiling of tuber flesh and peel for selected colored potato varieties revealed cultivar and tissue specific profiles of anthocyanins and other polyphenols with variations in composition and concentration. Starchy tubers of Solanum tuberosum are a staple crop and food in many countries. Among cultivated potato varieties a huge biodiversity exists, including an increasing number of red and purple colored cultivars. This coloration relates to the accumulation of anthocyanins and is supposed to offer nutritional benefits possibly associated with the antioxidative capacity of anthocyanins...
August 2017: Planta
https://www.readbyqxmd.com/read/28662156/hydrogen-sulfide-alleviates-postharvest-ripening-and-senescence-of-banana-by-antagonizing-the-effect-of-ethylene
#13
Yun Ge, Kang-Di Hu, Sha-Sha Wang, Lan-Ying Hu, Xiao-Yan Chen, Yan-Hong Li, Ying Yang, Feng Yang, Hua Zhang
Accumulating evidence shows that hydrogen sulfide (H2S) acts as a multifunctional signaling molecule in plants, whereas the interaction between H2S and ethylene is still unclear. In the present study we investigated the role of H2S in ethylene-promoted banana ripening and senescence by the application of ethylene released from 1.0 g·L-1 ethephon solution or H2S with 1 mM sodium hydrosulfide (NaHS) as the donor or in combination. Fumigation with ethylene was found to accelerate banana ripening and H2S treatment effectively alleviated ethylene-induced banana peel yellowing and fruit softening in parallel with decreased activity of polygalacturonase (PG)...
2017: PloS One
https://www.readbyqxmd.com/read/28651482/modulation-of-some-markers-of-erectile-dysfunction-and-malonaldehyde-levels-in-isolated-rat-penile-tissue-with-unripe-and-ripe-plantain-peels-identification-of-the-constituents-of-the-plants-using-hplc
#14
Ganiyu Oboh, Adedayo Oluwaseun Ademiluyi, Sunday Idowu Oyeleye, Tosin Abiola Olasehinde, Aline Augusti Boligon
CONTEXT: Plantain fruit pulp has been used as a natural remedy to manage erectile dysfunction (ED) in traditional medicine. However, the potency of the peel has not been examined with respect to ED management. OBJECTIVE: This study investigated and compared the inhibitory potential of unripe (UPP) and ripe (RPP) plantain peels on some enzymes associated with ED and Fe(2+)-induced oxidative stress in albino rat penile homogenate in vitro. MATERIALS AND METHOD: Aqueous extract of the peels was prepared and the effect on phosphodiesterase-5 (PDE-5), arginase, acetylcholinesterase (AChE), angiotensin-I converting enzyme (ACE) and Fe(2+)-induced malonyladehyde in isolated albino rat penile homogenate were investigated...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28651135/a-model-biorefinery-for-avocado-persea-americana-mill-processing
#15
Javier A Dávila, Moshe Rosenberg, Eulogio Castro, Carlos A Cardona
This research investigated and evaluated a biorefinery for processing avocado Hass variety into microencapsulated phenolic compounds extract, ethanol, oil and xylitol. Avocado was first characterized for its potential valuable compounds; then, the techno-economic and environmental aspects of the biorefinery were developed and finally the total production costs and potential environmental impact of the proposed biorefinery were investigated. Four scenarios of the biorefinery were evaluated with different extent of mass and energy integration as well as the incorporation of a cogeneration system...
June 15, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28648174/functionalization-of-pectin-with-laccase-mediated-oxidation-products-of-ferulic-acid
#16
N Karaki, A Aljawish, L Muniglia, S Bouguet-Bonnet, S Leclerc, C Paris, J Jasniewski, C Humeau-Virot
Pectin is a natural biopolymer extracted mostly from citrus peel, sugar beet and apple pomace. In order to improve its functional properties and then to enlarge the field of its potential applications, functionalization reaction of citrus pectin with ferulic acid (FA)-oxidation products was performed in aqueous medium, at 30°C and pH7.5, in the presence of Myceliophthora thermophila laccase as biocatalyst. The conjugation between FA-oxidation products and pectin was confirmed using FTIR, UV-Vis and LC-MS analyses...
September 2017: Enzyme and Microbial Technology
https://www.readbyqxmd.com/read/28627245/phytochemical-screening-and-in-vitro-evaluation-of-pharmacological-activities-of-peels-of-musa-sapientum-and-carica-papaya-fruit
#17
Sarmad Siddique, Shamsa Nawaz, Faqir Muhammad, Bushra Akhtar, Bilal Aslam
Aqueous, absolute and 80% ethanolic extract of fruit peels of Musa sapientum and Carica papaya were investigated for their antibacterial activity, measured by disc diffusion method and antioxidant activity, measured by four different methods. Papaya and banana peels were found to contain terpenoids, tannins, alkaloids, saponins steroid, phenols, fixed oils and fats. 80% ethanolic extract of banana peel was found to contain highest total phenolic content (TPC), total flavonoid content (TFC) and antioxidant activity but in papaya peel, highest TPC and reducing activity was shown by water extract while, TFC and radical scavenging activity was given by 80% ethanolic extract...
June 18, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28600209/phytochemical-content-fatty-acids-composition-and-antioxidant-potential-of-different-pomegranate-parts-comparison-between-edible-and-non-edible-varieties-grown-in-tunisia
#18
Zahra Amri, Faten Zaouay, Houda Lazreg-Aref, Hala Soltana, Amira Mneri, Messaoud Mars, Mohamed Hammami
Few comparative studies were interested between edible and non-edible pomegranate varieties. In the present study, flowers, leaves, juice and peel of two pomegranate varieties, ornamental variety "Nana" (NV) and sweet variety "Tounsi" (TV) were compared for their phenolic contents and antioxidant activity. Seeds oils were compared also for their fatty acids (FA) composition.Results showed that peel and juice of NV contained higher content in tannins, Flavonoids and anthocyanins. In contrast, peel and juice of TV were more concentrated in carotenoids and polyphenols...
November 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28554619/swarm-motility-inhibitory-and-antioxidant-activities-of-pomegranate-peel-processed-under-three-drying-conditions
#19
K M Maria John, Arvind A Bhagwat, Devanand L Luthria
During processing of ready-to-eat fresh fruits, large amounts of peel and seeds are discarded as waste. Pomegranate (Punicagranatum) peels contain high amounts of bioactive compounds which inhibit migration of Salmonella on wet surfaces. The metabolic distribution of bioactives in pomegranate peel, inner membrane, and edible aril portion was investigated under three different drying conditions along with the anti-swarming activity against Citrobacter rodentium. Based on the multivariate analysis, 29 metabolites discriminated the pomegranate peel, inner membrane, and edible aril portion, as well as the three different drying methods...
November 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28551240/jackfruit-artocarpus-heterophyllus-lam-peel-a-better-source-of-antioxidants-and-a-glucosidase-inhibitors-than-pulp-flake-and-seed-and-phytochemical-profile-by-hplc-qtof-ms-ms
#20
Lu Zhang, Zong-Cai Tu, Xing Xie, Hui Wang, Hao Wang, Zhen-Xing Wang, Xiao-Mei Sha, Yu Lu
Jackfruit (Artocarpus heterophyllus Lam.) peel is an underutilized by-product in both, the production and processing of jackfruit. This research compared the antioxidant and hypoglycemic potential of jackfruit peel with jackfruit pulp, flake and seed for the first time. The phytochemical profile of peel extract was characterized with HPLC-QTOF-MS/MS. Results revealed that peel extract exhibited the highest total phenolic and total flavonoid content, and the phenolics was 4.65, 4.12 and 4.95 times higher than that of pulp, flake and seed extract, respectively...
November 1, 2017: Food Chemistry
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