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phenol peel

Stina C M Burri, Anders Ekholm, Åsa Håkansson, Eva Tornberg, Kimmo Rumpunen
Horticultural plant materials not usually used from onion, carrot, beetroot, sea buckthorn, black and red currants as well as a wastewater powder from olive oil production were analyzed for total phenols content (FC), ferric reducing ability of plasma (FRAP), radical scavenging capacity (ABTS), and for major phenolic compounds by HPLC-MS. Antioxidant capacity and phenol content varied significantly between species and cultivars, with extracts of sea buckthorn leaves being superior. In different species, different phenolic compounds were closely associated with FRAP, ABTS and FC...
November 2017: Journal of Functional Foods
Jia Tian, Xiaoyan Wu, Moyang Zhang, Zhongyi Zhou, Yingfeng Liu
Apple consumption has been demonstrated to be associated with reduced risk of cardiovascular disease, and the beneficial effect is probably due to the polyphenols in apple. Here, we for the first time evaluated and compared the in vivo effects of the polyphenolic extracts of apple peels (PAP) and apple fleshes (PAF) on blood pressure, vascular endothelial function, lipid metabolism and insulin resistance. A high-fat and high-fructose (HFHF) diet was used to cause cardiovascular disorders in mice, with blood pressure, serum ET-1, TC, TG, LDL-C, glucose and insulin levels increased, and serum NO and HDL-C levels decreased...
November 6, 2017: Clinical and Experimental Hypertension: CHE
Atallah F Ahmed, Hanan M Al-Yousef, Jawaher H Al-Qahtani, Mansour S Al-Said
Onion peel is a common bio-waste, occasionally used in traditional medicine in treatment of liver ailment and inflammation. However, a phytochemical and biological study is further required to provide the scientific evidence for this use. A phenolic-rich extract of red onion peels (coded as ACPE) was primarily prepared and then subjected to chromatographic separation. From the extract, six phenolic antioxidant compounds along with two phytosterols were isolated and identified by means of spectroscopic (NMR and MS) analyses...
September 2017: Pakistan Journal of Pharmaceutical Sciences
Daniela Ribeiro Alves, Selene Maia de Morais, Fernanda Tomiotto-Pellissier, Milena Menegazzo Miranda-Sapla, Fábio Roger Vasconcelos, Isaac Neto Goes da Silva, Halisson Araujo de Sousa, João Paulo Assolini, Ivete Conchon-Costa, Wander Rogério Pavanelli, Francisco das Chagas Oliveira Freire
Caryocar coriaceum fruits, found in Brazilian Cerrado and Caatinga, are commonly used as food and in folk medicine, as anti-inflammatory, bactericide, fungicide, leishmanicide, and nematicide. Due to the biological potential of this plant, this study focuses on the evaluation of antifungal and antileishmanial activities, including anticholinesterase and antioxidant tests, correlating with total phenols and flavonoids content. Peel extracts contain higher yield of phenols and flavonoids as analyzed by spectrophotometric methods...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
Carlos G Wambier, Flávio L Beltrame
No abstract text is available yet for this article.
October 26, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
Tian Tian, Junan Zeng, Guangyu Zhao, Wenjing Zhao, Songyi Gao, Li Liu
Orientin (luteolin-8-C-glucoside) is a phenolic compound found abundantly in millet, juice, and peel of passion fruit and has been shown to have antioxidant properties. In the present study, we explored the effects of orientin on oxygen-glucose deprivation/reperfusion (OGD/RP)-induced cell injury in primary culture of rat cortical neurons using an in vitro model of neonatal ischemic brain injury. The reduced cell viability and elevated lactate dehydrogenase leakage were observed after OGD/RP exposure, which were then reversed by orientin (10, 20, and 30 µM) pretreatment in a dose-dependent manner...
January 1, 2017: Experimental Biology and Medicine
R Pacheco-Ordaz, A Wall-Medrano, M G Goñi, G Ramos-Clamont-Montfort, J F Ayala-Zavala, G A González-Aguilar
Fruit extracts from different tissues (pulp, seed and peel) have shown antimicrobial and prebiotic activities related to their phenolic profile, although structure-specific evaluations have not been reported yet. The effect of five phenolic compounds (catechin and gallic, vanillic, ferulic, and protocatechuic acids) identified in different fruits, particularly in mango, was evaluated on the growth of two probiotic [Lactobacillus rhamnosus GG ATCC 53103 and L. acidophilus NRRLB 4495] and two pathogenic [Escherichia coli 0157:H7 ATCC 43890 and Salmonella enterica serovar Typhimurium ATCC 14028] bacteria...
October 24, 2017: Letters in Applied Microbiology
Muhammad Asif, Syed Ali Raza Naqvi, Tauqir A Sherazi, Matloob Ahmad, Ameer Fawad Zahoor, Sohail Anjum Shahzad, Zaib Hussain, Hassan Mahmood, Nasir Mahmood
Natural resources right from the beginning of the human civilization has paved the way to human being to combat different challenges. The big challenge was to safe the human being from diseases and shortage of food. Plants helped the man in both areas very efficiently. No doubt when plants are used as food actually we are also taking lot of compounds of medicinal values in an excellent combination which naturally reduce the risk of diseases. Extraction and purification of several medicinally important compounds also gave the way to develop pharmaceutical industry in addition to its own therapeutic effects against different lethal diseases...
July 2017: Pakistan Journal of Pharmaceutical Sciences
Carlos Gustavo Wambier, Sarah Perillo de Farias Wambier, Liliana Elias Pena Pilatti, Jessica Adriana Grabicoski, Luis Fernando Wambier, André Schmidt
No abstract text is available yet for this article.
October 7, 2017: Journal of the American Academy of Dermatology
Ante Lončarić, Mirela Kopjar, Vlasta Piližota
The aim of the present study was to evaluate the effect of addition of 5% of apple peel powder (APP) and sugars (1, 5% of glucose, fructose, sucrose or trehalose) in apple purée on its phenolic composition and antioxidant activity (AOA). Apple purée samples were processed by freezing and freeze-drying. Apple purées containing APP showed higher phenolics, and AOA than the purées without APP. In freeze-dried samples the highest retention of individual polyphenols was achieved with addition of 1% of fructose or trehalose...
September 2017: Journal of Food Science and Technology
Fernanda Aline de Moura, Fernanda Teixeira Macagnan, Lucciélli Rodrigues Dos Santos, Marilia Bizzani, Carmen Lúcia de Oliveira Petkowicz, Leila Picolli da Silva
The composition and fine structure of pectins found in plant cell walls are heterogeneous, with striking differences, depending on their source, and this eventually determines their functional and technological properties. The aim of this study was to extract and determine the chemical composition and physicochemical properties of pectins from different sources: passion fruit peel, orange pomace, and soy hull. Pectin extraction was performed with heated hydrochloric acid solution, followed by precipitation with 96% ethanol...
September 2017: Journal of Food Science and Technology
Carolina Rojas-Garbanzo, Benno F Zimmermann, Nadine Schulze-Kaysers, Andreas Schieber
Pink guava (Psidium guajava L.) is a highly consumed fruit in tropical countries. Despite of interesting research on health effects of this fruit, investigations into the profile of secondary plant metabolites are scarce. In this study, the phenolic compounds in the peel and flesh of pink guava were characterized by ultra-high performance liquid chromatography with diode array and mass spectrometric detection. Sixty phenolic compounds were characterized by MS(2) and classified as ellagitannins, flavones, flavonols, flavanols, proanthocyanidins, dihydrochalcones, and anthocyanidins, and non-flavonoids such as phenolic acid derivatives, stilbenes, acetophenones, and benzophenones...
October 2017: Food Research International
Ana López-Cobo, Vito Verardo, Elixabet Diaz-de-Cerio, Antonio Segura-Carretero, Alberto Fernández-Gutiérrez, Ana M Gómez-Caravaca
Mango industry processing generates high quantities of mango by-products such as peels and seeds (35%-60% of the fruit). Indeed, it is known that mango and its by-products contain different families of bioactive compounds that possess several health benefits. Thus, the aim of this study has been the determination of different families of phenolic derivatives (free and bound phenolic compounds and alk(en)ylresorcinols (ARs)) in mango edible part and its by-products (peel, seed and seed husk) from three different cultivars...
October 2017: Food Research International
Suriyaporn Nipornram, Worasit Tochampa, Puntarika Rattanatraiwong, Riantong Singanusong
Mandarin peel is a good source of phenolic compounds, which can be extracted by the ultrasound-assisted extraction (UAE) method. This research was to optimize the UAE conditions for maximum mandarin peel extract (MPE) relating to the extract yield, total phenolic content and the content of a mandarin peel rich flavonoid, hesperidin, using a response surface method comparing with the maceration extraction (MAE) method. The results showed that the selected factors (temperature, time and power) have a significant influence on the extraction yield, total phenolic content and hesperidin content...
February 15, 2018: Food Chemistry
Daren Qiu, Jie Guo, Huimei Yu, Jiao Yan, Shengxiang Yang, Xiang Li, Yamei Zhang, Jinzhu Sun, Jie Cong, Shuliang He, Dongsheng Wei, Jian-Chun Qin
Thirteen phenolic compounds were isolated from pear (Pyrus ussuriensis Maxim.) peels and leaves extracts by using various column chromatography techniques with a guided DPPH (1,1-diphenyl-2-picrylhydrazyl) radical-scavenging assay, the result of antioxidant activity of phenolic compounds is then verified by measurement of ROS (reactive oxygen species). The isolated compounds were identified as rutin (1), (-)-catechin (2), orobol (3), daidzein (4), tricin 4'-O-[threo-β-guaiacyl-(7″-O-methyl)-glyceryl] ether (5), tricin 4'-O-[threo-β-guaiacyl-(7″-O-methyl-9″-O-acetyl)-glyceryl] ether (6), 5,7,3',5'-tetrahydroxyflavanone (7), artselaeroside A (8), trilobatin (9), 3-(2,4,6-trihydroxyphenyl)-1-(4-hydroxyphenyl)-propan-1-one (10), quercetin-3-O-(3″-O-galloyl)-α-l-rhamnopyranoside (11), apigenin (12) and quercetin (13) on the basis of nuclear magnetic resonance spectroscopy along with comparison with literature data...
February 15, 2018: Food Chemistry
Zhenhua Feng, Xiaobin Li, Jian Lin, Wenhao Zheng, Zhichao Hu, Jiangwei Xuan, Wenfei Ni, Xiaoyun Pan
Osteoarthritis (OA) is the most common form of joint disease and is widespread in the elderly population and is characterized by erosion of articular cartilage, subchondral bone sclerosis and synovitis. Oleuropein (OL), a secoiridoid, is considered as the most prevalent phenolic component in olive leaves and seeds, pulp and peel of unripe olives and has been shown to have potent anti-inflammatory effects. However, its effects on OA have not been clearly elucidated. This study aimed to assess the effect of OL on human OA chondrocytes...
September 27, 2017: Food & Function
Nuratika Tamimi S Mohamed, Phebe Ding, Jugah Kadir, Hasanah M Ghazali
Crown rot caused by fungal pathogen is the most prevalent postharvest disease in banana fruit that results significant economic losses during transportation, storage, and ripening period. Antifungal effects of ultraviolet C (UVC) irradiation at doses varied from 0.01 to 0.30 kJ m(-2) were investigated in controlling postharvest crown rot disease, maintenance of fruit quality, and the effects on antioxidant capacity of Berangan banana fruit during ripening days at 25 ± 2°C and 85% RH. Fruits irradiated with 0...
September 2017: Food Science & Nutrition
M Sneha Nair, Alok Saxena, Charanjit Kaur
The influence of chitosan (1% w/v) and alginate (2% w/v) coatings in combination with pomegranate peel extract (PPE; 1% w/v) on quality of guavas (cv Allahabad safeda) were studied. Restricted changes were recorded in respiration rate, ripening index, and instrumental colour values in case of the coated samples as compared to the control for 20days at 10°C. Samples coated with chitosan enriched with PPE (CHE) proved to be the most effective treatment in maintaining the overall fruit quality. Ascorbic acid, total phenolics, total flavonoids contents and antioxidant activity were recorded with restricted losses of 29%, 8%, 12%, 12% (DPPH) and 9% (FRAP), respectively for CHE samples at the end of storage...
February 1, 2018: Food Chemistry
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
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
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