Antioxidant capacities and total phenolic contents of 56 vegetables

Abstract

A B S T R A C TThe antioxidant capacities and total phenolic contents of lipophilic and hydrophilic extracts of 56 commonly consumed vegetables were studied. The resulted showed that antioxidant capacities and total phenolic contents in the lipophilic fraction were higher than those in hydrophilic fraction. The different vegetables had diverse antioxidant capacities. The highest antioxidant capacities and phenolic contents were found in Chinese toon bud, loosestrife, perilla leaf, cowpea, caraway, lotus root, sweet potato leaf, soy bean (green), pepper leaf, ginseng leaf, chives, and broccoli, while the values were very low in marrow squash and eggplant (purple). Furthermore, several phenolic compounds were detected, and chlorogenic acid, gallic acid and galangin were widely found in these vegetables. The results provide support for dietary guidelines as well as epidemiological research.

Total phenolic contents and antioxidant capacities of 51 edible and wild flowers

“…Five flowers, R. hybrida (175.39 ± 1.74 lmol trolox/g), L. sinuatum (157.42 ± 2.68 lmol trolox/g), P. hortorum (132.18 ± 5.46 lmol trolox/g), J. integerrima (115.01 ± 4.20 lmol trolox/g), and O. fragrans (71.98 ± 3.13 lmol trolox/g) had the highest free radical scavenging capacities. Furthermore, the TEAC values of those flowers were higher than those of vegetables and wild fruits reported in the literature (Deng et al, 2013;Fu et al, 2010).…”

“…Five flowers, Rosa hybrida (178.43 ± 14.31 lmol Fe(II)/g), Limonium sinuatum (139.37 ± 8.28 lmol (Onanong et al, 2011). In addition, antioxidant capacities of these flowers were also higher than those of vegetables (Deng et al, 2013), and were similar to those of fruits (Fu et al, 2010).…”

Effect of germination on proximate principles, minerals and antinutrients of flaxseeds

“…This is due to the presence of anti-nutritional compounds cyanogenic glycosides which is a potent respiratory inhibitor that interferes with iodine uptake and phytic acid, which interferes with the availability of minerals by forming complexes. The role of antioxidant and polyphenols in human diet is also well established (Deng et al, 2013). To overcome the anti-nutrients, germination process has been adopted by various researchers.…”

Bioactivities and Health Benefits of Mushrooms Mainly from China

“…Various natural products, such as vegetables, fruits, edible flowers, cereal grains and medicinal plants, contain rich natural antioxidants [5][6][7][8][9], which can capture free radicals and be used to prevent some diseases caused by oxidative stress. Among the notable medicinal properties of mushrooms, the antioxidant activity, including inhibition of lipid peroxidation, reduction of human low-density lipoproteins, scavenging of free radicals, etc., has been extensively studied.…”