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https://www.readbyqxmd.com/read/28193408/physicochemical-characterization-antioxidant-capacity-total-phenolic-and-proanthocyanidin-content-of-flours-prepared-from-pequi-caryocar-brasilense-camb-fruit-by-products
#1
Daniela P Leão, Adriana S Franca, Leandro S Oliveira, Rita Bastos, Manuel A Coimbra
The potential of pequi by-products as substrates for the production of flours rich in antioxidant dietary fibers was evaluated. Dietary fiber contents ranged from 39.8 to 43.3g/100g with pectic polysaccharide fraction constituted of rhamnogalacturonans and hemicellulose fraction consisted of arabinogalactans, xylans and glucomannans. Total polyphenols, non-extractable proanthocyanidins (NEPA) and carotenoid contents of the flours were determined (respectively, 15.5-17.4g GAE/100g, 215.54-346.84mg/100g and 2116...
June 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28191939/phytochemical-profiles-of-new-red-fleshed-apple-varieties-compared-with-traditional-and-new-white-fleshed-varieties
#2
David Bars-Cortina, Alba Macià, Ignasi Iglesias, Maria Paz Romero, Maria José Motilva
This study is an exhaustive chemical characterization of the phenolic compounds, triterpenes, and organic and ascorbic acids in red-fleshed apple varieties obtained by different breeding programs and using five traditional and new white-fleshed apple cultivars as reference. To carry out these analyses, solid-liquid extraction (SLE) and ultraperformance liquid chromatography coupled to tandem mass spectrometry (UPLC-MS/MS) were used. The results showed that the red-fleshed apples contained, in either the flesh or peel, higher amounts of phenolic acids (chlorogenic acid), anthocyanins (cyanidin-3-O-galactoside), dihydrochalcones (phloretin xylosyl glucoside), and organic acids (malic acid) but a lower amount of flavan-3-ols than the white-fleshed apples...
February 13, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28176161/erratum-to-carotenoids-phenolic-profile-mineral-content-and-antioxidant-properties-in-flesh-and-peel-of-prunus-persica-fruits-during-two-maturation-stages
#3
Samia Dabbou, Samira Maatallah, Antonella Castagna, Monia Guizani, Wala Sghaeir, Hichem Hajlaoui, Annamaria Ranieri
No abstract text is available yet for this article.
February 7, 2017: Plant Foods for Human Nutrition
https://www.readbyqxmd.com/read/28170233/polyphenol-and-ellagitannin-constituents-of-jabuticaba-myrciaria-cauliflora-and-chemical-variability-at-different-stages-of-fruit-development
#4
Luciane Dias Pereira, João Marcos Gonçalves Barbosa, Antonio Jorge Ribeiro da Silva, Pedro Henrique Ferri, Suzana Costa Santos
A new ellagitannin named cauliflorin (1), seven known hydrolyzable tannins (2-8), and six known phenolics (9-14) were isolated from jabuticaba. Compounds 2-8 had not been previously isolated from M. cauliflora fruits. The jabuticaba fruit was analyzed at four developmental stages for ellagitannins 1, 3, 7, and 8, phenolic acids 11 and 12, anthocyanins, organic acids, and sugars via HPLC-UV-DAD and NMRq. The content of ellagitannins and organic acids declined during fruit development, whereas at full ripeness sugar and anthocyanin levels underwent a sharp increase and were mainly constituted by fructose and cyanidin-3-O-glucose, respectively...
February 7, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28165379/in-vitro-lipophilic-antioxidant-capacity-antidiabetic-and-antibacterial-activity-of-citrus-fruits-extracts-from-aceh-indonesia
#5
Ernawita, Ruri Agung Wahyuono, Jana Hesse, Uta-Christina Hipler, Peter Elsner, Volker Böhm
This study reports in vitro lipophilic antioxidant, inhibition of α-amylase and antibacterial activities of extracts of peel and pulp of citrus samples from Aceh, Indonesia. HPLC (high-performance liquid chromatography), phytochemical, and FTIR (fourier transform infrared) analysis detected carotenoids, flavonoids, phenolic acids and terpenoids, contributing to the biological potencies. Most peel and pulp extracts contained lutein and lower concentrations of zeaxanthin, α-carotene, β-carotene and β-cryptoxanthin...
February 3, 2017: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28139056/phenolic-composition-of-pomegranate-peel-extracts-using-an-lc-ms-approach-with-silica-hydride-columns
#6
Joshua E Young, Zhongli Pan, Hui Ean Teh, Veena Menon, Brent Modereger, Joseph J Pesek, Maria T Matyska, Lan Dao, Gary Takeoka
The peels of different pomegranate cultivars (Molla Nepes, Parfianka, Purple Heart, Wonderful and Vkunsyi) were compared in terms of phenolic composition and total phenolics. Analyses were performed on two silica hydride-based stationary phases: phenyl and undecanoic acid columns. Quantitation was accomplished by developing a liquid chromatography with mass spectrometry approach for separating different phenolic analytes, initially in the form of reference standards and then with pomegranate extracts. The high-performance liquid chromatography columns used in the separations had the ability to retain a wide polarity range of phenolic analytes, as well as offering beneficial secondary selectivity mechanisms for resolving the isobaric compounds, catechin and epicatechin...
January 31, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28137606/protective-effects-of-rambutan-nephelium-lappaceum-peel-phenolics-on-h2o2-induced-oxidative-damages-in-hepg2-cells-and-d-galactose-induced-aging-mice
#7
Yongliang Zhuang, Qingyu Ma, Yan Guo, Liping Sun
Rambutan peel phenolic (RPP) extracts were prepared via dynamic separation with macroporous resin. The total phenolic content and individual phenolics in RPP were determined. Results showed that the total phenolic content of RPP was 877.11 mg gallic acid equivalents (GAE)/g extract. The content of geranin (122.18 mg/g extract) was the highest among those of the 39 identified phenolic compounds. RPP protected against oxidative stress in H2O2-induced HepG2 cells in a dose-response manner. The inhibitory effects of RPP on cell apoptosis might be related to its inhibitory effects on the generation of intracellular reactive oxygen species and increased effects on superoxide dismutase activity...
January 27, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28120142/vacuum-drying-for-extending-litchi-shelf-life-vitamin-c-total-phenolics-texture-and-shelf-life-assessment
#8
Felipe Richter Reis, Aline Caroline de Oliveira, Gabriella Giani Pieretti Gadelha, Marcela Breves de Abreu, Hillary Isabelle Soares
In an attempt to obtain shelf-stable litchi fruit with preserved nutritional quality and good sensory features, quarters of peeled and pitted fruits were vacuum dried at 50, 60 and 70 °C at a constant pressure of 8.0 kPa. The product was assessed for its vitamin C, total phenolics and texture (hardness). In addition, the product with the best texture was assessed for its shelf-life by means of accelerated testing. Results suggest that vacuum dried litchi retained almost 70% of the vitamin C and total phenolics when compared to frozen fruits (control)...
January 24, 2017: Plant Foods for Human Nutrition
https://www.readbyqxmd.com/read/28115751/phenolics-extraction-from-sweet-potato-peels-modelling-and-optimization-by-response-surface-modelling-and-artificial-neural-network
#9
Ana Anastácio, Rúben Silva, Isabel S Carvalho
Sweet potato peels (SPP) are a major waste generated during root processing and currently have little commercial value. Phenolics with free radical scavenging activity from SPP may represent a possible added-value product for the food industry. The aqueous extraction of phenolics from SPP was studied using a Central Composite Design with solvent to solid ratio (30-60 mL g(-1)), time (30-90 min) and temperature (25-75 °C) as independent variables. The comparison of response surface methodology (RSM) and artificial neural network (ANN) analysis on extraction modelling and optimising was performed...
December 2016: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28071019/influence-of-different-extraction-conditions-on-antioxidant-properties-of-soursop-peel
#10
Wei Zin Lee, Sui Kiat Chang, Hock Eng Khoo, Chiaw Mei Sia, Hip Seng Yim
BACKGROUND: Soursop is a healthy fruit. Peels form about 20% of the soursop fruit and are usually discarded as waste product. With a view to utilizing soursop peel as a source of valuable compounds, this study aimed to investigate the influence of different extraction conditions on total phenolic content (TPC) and antioxidant capacity (AC) of soursop (Annona muricata L.) peel. METHODS: Different ethanol concentrations (20-100%, v/v), extraction temperatures (25- 60°C), and extraction time (1-5 h) were tested...
October 2016: Acta Scientiarum Polonorum. Technologia Alimentaria
https://www.readbyqxmd.com/read/28070259/phenol-removal-from-aqueous-environment-by-adsorption-onto-pomegranate-peel-carbon
#11
Mojtaba Afsharnia, Mahdi Saeidi, Amin Zarei, Mohammad Reza Narooie, Hamed Biglari
INTRODUCTION: Phenol and its derivatives are the most common poisonous compounds which are stable in aqueous media and lead to many health issues. In this study, application of the carbon resulted from pomegranate peel is investigated in removal of phenol by adsorption method. METHODS: to perform this cross-sectional study, first, samples of phenol with concentrations of 10 to 100 mg/L were prepared for six months in 2016. Then, the impacts of parameters such as pH, adsorbent dosage, contact time, and initial concentration of phenol in adsorption process were investigated independently in Gonabad Chemistry Lab using a spectrophotometer at 505 nm as the wavelength...
November 2016: Electronic Physician
https://www.readbyqxmd.com/read/28035161/composition-bioactive-compounds-and-antioxidant-activity-of-common-indian-fruits-and-vegetables
#12
Jatinder Pal Singh, Amritpal Kaur, Khetan Shevkani, Narpinder Singh
The present work was undertaken to evaluate the chemical composition (proximate, minerals and dietary fibre), colour parameters, antioxidant activity and polyphenol profiles of different fruits (pomegranate, kinnow, mango, banana, jambolan, grapes and sapodilla) and vegetables (beetroot, brinjal, orange carrot, bitter gourd, mentha and spinach). The amount of insoluble dietary fibre was higher than soluble dietary fibre for all fruits and vegetables. Vegetables showed superior mineral composition (higher amounts of K, Ca and Fe) as compared to fruits...
November 2016: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/27979233/total-phenolic-contents-antioxidant-activities-and-bioactive-ingredients-of-juices-from-pomegranate-cultivars-worldwide
#13
REVIEW
Zeynep Kalaycıoğlu, F Bedia Erim
Numerous recent scientific publications investigating the health benefits of pomegranate juice have greatly increased consumer interest in this fruit. The primary cause of the positive health effect of pomegranate is the unique antioxidant activity of this fruit. As a result of the increased attention given to pomegranate, the number of countries producing pomegranate has increased and new cultivars are appearing. The purpose of this review is to quantitatively establish the antioxidant activities, the total phenolic contents which are highly correlated to antioxidant activities, and the other important ingredients of pomegranate juices obtained from cultivars of different regions...
April 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27979149/characterization-phenolic-compounds-and-functional-properties-of-cucumis-melo-l-peels
#14
Sana Mallek-Ayadi, Neila Bahloul, Nabil Kechaou
The aim of this work is to investigate the phytochemical composition and functional properties of the melon peels, considered as a by-product. Melon peels (maazoun cultivar) are rich in nutritional ingredients such as carbohydrates (69.77%) and ash (3.67%). They contain significant amounts of total dietary fibers (41.69%) and antioxidants as polyphenols and flavonoids (332mg/100g extract and 95.46mg/100g extract, respectively). The identification and the quantification of the phenolic compounds of melon peels were performed by high performance liquid chromatography apparatus...
April 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27939964/sustainable-biobutanol-production-from-pineapple-waste-by-using-clostridium-acetobutylicum-b-527-drying-kinetics-study
#15
Manisha A Khedkar, Pranhita R Nimbalkar, Shashank G Gaikwad, Prakash V Chavan, Sandip B Bankar
Present investigation explores the use of pineapple peel, a food industry waste, for acetone-butanol-ethanol (ABE) production using Clostridium acetobutylicum B 527. Proximate analysis of pineapple peel shows that it contains 35% cellulose, 19% hemicellulose, and 16% lignin on dry basis. Drying experiments on pineapple peel waste were carried out in the temperature range of 60-120°C and experimental drying data was modeled using moisture diffusion control model to study its effect on ABE production. The production of ABE was further accomplished via acid hydrolysis, detoxification, and fermentation process...
February 2017: Bioresource Technology
https://www.readbyqxmd.com/read/27934289/schistosomicidal-activity-of-alkyl-phenols-from-the-cashew-anacardium-occidentale-against-schistosoma-mansoni-adult-worms
#16
Tavane A Alvarenga, Pollyanna F de Oliveira, Julia M de Souza, Denise C Tavares, Márcio L Andrade E Silva, Wilson R Cunha, Milton Groppo, Ana H Januário, Lizandra G Magalhães, Patrícia M Pauletti
Bioassay-guided study of the ethanol extract from the cashew Anacardium occidentale furnished cardol triene (1), cardol diene (2), anacardic acid triene (3), cardol monoene (4), anacardic acid diene (5), 2-methylcardol triene (6), and 2-methylcardol diene (7). 1D- and 2D-NMR experiments and HRMS analysis confirmed the structures of compounds 1-7. Compounds 2 and 7 were active against Schistosoma mansoni adult worms in vitro, with LC50 values of 32.2 and 14.5 μM and selectivity indices of 6.1 and 21.2, respectively...
November 23, 2016: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/27904413/influence-of-yellow-light-emitting-diodes-at-590-nm-on-storage-of-apple-tomato-and-bell-pepper-fruit
#17
Doris Kokalj, Janez Hribar, Blaž Cigić, Emil Zlatić, Lea Demšar, Lovro Sinkovič, Helena Šircelj, Grega Bizjak, Rajko Vidrih
The objective of this study is to investigate the effects of irradiation from light-emitting diodes (LEDs) on several fruits during storage. To improve storage and increase the contents of some bioactive compounds, apple, tomato and red bell pepper fruits were exposed to yellow light emitted from the diodes at 590 nm. The contents of ascorbic acid, total phenolics, total flavonoids and several pigments were investigated, along with the antioxidant potential. The colour parameters (L*, a* and b*) and firmness of the fruit were also determined...
June 2016: Food Technology and Biotechnology
https://www.readbyqxmd.com/read/27876922/anthelmintic-potential-of-calotropis-procera-azadirachta-indica-and-punica-granatum-against-gastrothylax-indicus
#18
Rama Aggarwal, Kiranjeet Kaur, Mansi Suri, Upma Bagai
Anthelmintic activity of both ethanolic and aqueous extracts of Calotropis procera flowers, Azadirachta indica leaves and Punica granatum fruit peel in comparison with albendazole was evaluated through in vitro studies by the worm motility inhibition assay. Significant anthelmintic effects (p < 0.0005) were observed on live Gastrothylax indicus worm as evident from their mortality at 4 h post exposure to both ethanolic and aqueous extracts. Phytochemical analysis of extracts revealed the presence of phenols, alkaloids, saponins, tannins, flavonoids, steroids and triterpenoids...
December 2016: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/27855922/chemical-characterization-and-protective-effect-of-the-bactris-setosa-mart-fruit-against-oxidative-nitrosative-stress
#19
Joana Schuelter Boeing, Daniela Ribeiro, Renan Campos Chisté, Jesuí Vergílio Visentainer, Vera Marisa Costa, Marisa Freitas, Eduarda Fernandes
Bactris setosa Mart. is a Brazilian tree from the palm family (Arecaceae), whose fruits are scientifically underexploited. Here, we report, for the first time, the identification and quantification of phenolic compounds and carotenoids in the pulp, seed, and peel extracts of B. setosa fruits and their in vitro biological activity. The anthocyanins cyanidin deoxyhexose hexoside and cyanidin hexoside and other phenolic compounds were detected mainly in the peel but also in the pulp extracts. All-trans-lutein was the unique carotenoid identified and quantified, and only in the peel extract...
April 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27812831/carotenoids-phenolic-profile-mineral-content-and-antioxidant-properties-in-flesh-and-peel-of-prunus-persica-fruits-during-two-maturation-stages
#20
Samia Dabbou, Samira Maatallah, Antonella Castagna, Monia Guizani, Wala Sghaeir, Hichem Hajlaloui, Annamaria Ranieri
Carotenoids and phenolic profile, antioxidant activity as well as concentrations of selected macronutrients (K, N, Mg, Ca and Na) and micronutrients (Zn, Cu and Mn) in flesh and peel of peach fruit were recorded at two harvest dates. Predominant mineral was potassium, followed by calcium, magnesium and sodium. The concentration of most micronutrients was greater in the peel than in the flesh especially in early season. The concentration of most elements in flesh and peel decreased during fruit maturation. Total carotenoids content varied with respect to the cultivar...
November 3, 2016: Plant Foods for Human Nutrition
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