FREE AND BOUND POLYPHENOLS IN MANGO FRUIT PEEL AS FUNCTIONAL FOOD INGREDIENTS WITH HIGH ANTIOXIDANT ACTIVITY

2015 ◽  
pp. 515-519 ◽  
Author(s):  
W. Kumpoun ◽  
Y. Motomura ◽  
T. Nishizawa
2020 ◽  
Vol 10 (4) ◽  
pp. 22-28
Author(s):  
M.N. Shkolnikova ◽  
◽  
E.A. Kadritskaya ◽  

The aim of the work was to substantiate the use of buckwheat husk for obtaining a functional food colorant melanin. The objects of the study were samples of buckwheat husk Fagopýrum esculéntum and isolated water-soluble melanin. The isolation of melanin was carried out by extraction of buckwheat husk with 4% NaOH at a hydraulic modulus of 1:20. The sorption capacity of the melanin extract was determined by its interaction with copper salt solutions in an alkaline medium. It has been established that a distinctive feature of buckwheat hulls is its low ash content, a rather high fiber content – 24.7–26.5%, and a sufficient content of pectin substances – 7.2–7.7% and melanin – 15.7–16.2%. The husk can be used for further processing in order to obtain the food coloring melanin. The experiment proved the ability of a melanin sample to bind copper ions: one gram of a 0.5% solution of buckwheat husk melanin extract bounded 966.6 mg/ml copper, and the antioxidant activity of one gram of melanin extract corresponds to the antioxidant activity of 0.056 g of rutin. Thus, water-soluble samples of melanin isolated from buckwheat hulls can be used as food coloring agents, as well as antioxidants and biosorbents, which makes it possible to recommend them as functional food ingredients in food.


2016 ◽  
Vol 1 (13) ◽  
Author(s):  
Nada V. Petrović ◽  
Slobodan S. Petrović ◽  
Dubravka Jovičić ◽  
Marina Francišković

Spices and herbs have been used for centuries by many cultures to enhance the flavor and aroma offoods. Early cultures also recognized the value of using spices and herbs in preserving foods and fortheir medicinal value. In the present study the essential oil of wild growing Thymus praecox Opiz ssp.polytrichus was isolated by hydrodistillationprocess. Extracts of T. praecox ssp.polytrichuswereprepared by using solvents of varying polarity. Antioxidant potential and ability of essential oil andextractsto neutralize DPPH radicals was investigated. The essential oil showed significantlyhigher antioxidant activity compared with synthetic antioxidants BHA and BHT. This workprovides the basis for the present rapidly increasing interest for the use of natural antioxidants as foodantioxidants, functional food ingredients and/or as nutritional supplements.


Molecules ◽  
2019 ◽  
Vol 24 (12) ◽  
pp. 2221 ◽  
Author(s):  
Zongxing He ◽  
Yulian Zhu ◽  
Xingyu Bao ◽  
Liuxin Zhang ◽  
Nan Li ◽  
...  

Ziziphus jujuba cv. Muzao is a plant widely cultivated in the Yellow River Basin of China. It has nutritional and healthcare functions, in which polysaccharides are the main components of its bio-functions. In order to make effective use of Ziziphus jujuba cv. Muzao residue resources and explore new functional food ingredients, the polysaccharide (ZJRP) from Ziziphus jujuba cv. Muzao residues were extracted by sodium hydroxide, and the optimal extraction conditions of ZJRP were obtained by the response surface method. The basic composition and antioxidant effects of ZJRP were determined. The results showed that ZJRP has significant antioxidant activity, mainly reflected in the high DPPH radical scavenging rate, which may be related to their high content of galacturonic acid and the extraction method. In addition, the rheological and thermal properties of ZJRP were respectively determined by a rheometer and differential scanning calorimetry (DSC), indicating that they have shear thinning properties and good thermal stability. Results showed that the alkaline extraction method can be used as a potential technique for extracting ZJRP with high antioxidant activity, and ZJRP can be further explored as a functional food ingredient.


2012 ◽  
Vol 132 (4) ◽  
pp. 1930-1935 ◽  
Author(s):  
Amélia P. Rauter ◽  
Catarina Dias ◽  
Alice Martins ◽  
Isabel Branco ◽  
Nuno R. Neng ◽  
...  

2017 ◽  
Vol 6 (1) ◽  
Author(s):  
Sunarmi Sunarmi ◽  
Susilo Yulianto

Abstract: Antioxidant, Red Dragon Fruit, Gel Mask. Skin is an organ that covers the entire human body, which has protection against external influences. Free radicals and the oxidation reaction can be inhibited by an antioxidant compound. Red dragon fruit peel is rarely used but has high antioxidant activity that can be used for skin care, especially facial skin. Red dragon fruit peel can be formulated into various dosage form of antioxidants for the face skin, one of which peel-off mask gel. This study aimed to test the antioxidant activity of peel-off mask gel with the active ingredient of red dragon fruit peel extracts. This research uses experimental methods. Red dragon fruit peel extracted by maceration in 70% ethanol and concentrated. Gel mask made in 3 variations extract concentration, ie formula A, B and C 0.175 g, 0.350 g and 0,700 g respectively. The physical stability test was conducted by cycling test for 6 cycles. The physical properties of the preparation were tested before and after storage include adhesion, dispersive power, pH, viscosity and time to dry. Antioxidant activity tested with DPPH method. Based on test results obtained physical stability, third-formula gel mask physically qualified and stable, except for the dispersive power. Antioxidant activity decreased after the storage. The highest activity was shown by formula C with an IC50 value of 3497.113 ppm. Based on IC50 values, this gel mask has an inactive. antioxidant activity.


2019 ◽  
Vol 14 (9) ◽  
pp. 170
Author(s):  
Tran Thi Ngoc Diep ◽  
Nguyen Thuy Huong

This study was conducted to collect Lactobacillus strains which having probiotic and antioxidant activities from traditional Vietnamese fermented food. After isolation, screening and identification, we selected two strains, Lactobacillus plantarum and Lactobacillus brevis with probiotic activity and high antioxidant activity. These strains would be the microbiological agent for further studies about probiotic functional food with antioxidant and other valuable activities.


2021 ◽  
Vol 296 ◽  
pp. 07007
Author(s):  
Svetlana Korpacheva ◽  
Kristina Serasutdinova ◽  
Igor Lomovsky ◽  
Olga Chugunova

In the paper, technology of melanin and powder from buckwheat (Fagopyrum esculentum) hull obtaining is studied. Buckwheat hull is a by-product of buckwheat grain production and has high antioxidant activity. It is a cheap source for raw material with high content of cellulose and brown melanin pigment. In Russia, buckwheat grain is strategical crop used in child and dietary nutrition. Buckwheat hulls, which production volume is about 22% of the total volume of processed grain, are practically not used. At the same time, buckwheat hull can be regarded as a valuable raw material for obtaining of several biologically active substances and technological food ingredients due to its unique chemical composition. The possibility and prospects of using products of buckwheat hulls processing in the formulation of dessert with functional properties, is described. It was found that the implementation of buckwheat processing by-products into the desserts increases their antioxidant activity, and addition of fine powder increases dietary fiber content in them.


2020 ◽  
Vol 44 (6) ◽  
pp. 651-661
Author(s):  
Neva KARATAŞ ◽  
Memnune ŞENGÜL

Turkey is one of the world’s leading producers in both in fresh and dried apricots, and Malatya Province is the capital for apricots. In the present study, the fruit of 13 apricot cultivars (Adilcevaz, Alkaya, Aprikoz, Çataloğlu, Hacıhaliloğlu, Hasanbey, İsmailağa, Kabaaşı, Mahmuduneriği, Soğancı, Şam, Şekerpare, and Tokaloğlu-Erzincan), grown together at the Apricot Research Institute in Malatya Province, were harvested and evaluated for some important physicochemical and bioactive characteristics. The results showed statistically significant differences in most of the physicochemical and bioactive characteristics. Fresh apricot fruit peel color values, L,a, and b, were determined as between 48.66 and 64.70, 8.12and 22.82, and 16.50and 38.67, respectively. The fruit, the dry matter (DM), pH, titratable acidity, reducing sugar, sucrose, total sugar, total phenolic content, lycopene, β-carotene, vitamin A, vitamin E and vitamin C contents were between 13.05% and 23.12%, 3.68 and 5.04, 0.22% and 1.40%, 2.02 and 5.40 g/100 g, 1.83 and 3.97 g/100g, 4.96 and 8.04 g/100 g, 24.60 and 50.69 mg GAE/mg fresh weight, 3.84 and 17.89 mg/100g, 19.59 and 40.53 mg/100g, 0.13 and 0.67 μg/g, 15.67 and 22.12 μg/g, and 1.41 and 8.16 μg/g, respectively. Antioxidant activity was determined using 3 different methods, β-carotene bleaching, trolox equivalent antioxidant capacity (TEAC), and 2,2-Diphenyl-1-picrylhydrazyl hydrate (DPPH). The antioxidant capacity varied according to the methods used. The results showed that apricot fruit had high antioxidant activity and varied according to methods used, and was rich in carotenoids and phenolic substances, which have positive effects on human health and can be consumed as a functional food.


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