In vitro evaluation of antioxidant properties of Cocos nucifera Linn. water

Abstract

Tender Cocos nucifera L. (Palmacea) water (CW), variety Chandrasankara, was tested for its ability to scavenge free radicals, inhibit lipid peroxidation and protect hemoglobin from nitrite-induced oxidation. Fresh sample of CW scavenged 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2'-azino-bis(3-ethylbenz-thiazoline-6-sulfonic acid) (ABTS) and superoxide radicals but promoted the production of hydroxyl radicals and increased lipid peroxidation. The activity was most significant for fresh samples of CW and diminished significantly upon heat, acid or alkali treatment or dialysis. Maturity of coconut drastically decreased the scavenging ability of CW against DPPH, ABTS and superoxide radicals. CW protected hemoglobin from nitrite-induced oxidation to methemoglobin when added before the autocatalytic stage of the oxidation. Acid, alkali or heat treated or dialyzed CW showed a decreased ability in protecting hemoglobin from oxidation. The scavenging ability and protection of hemoglobin from oxidation may be partly attributed to the ascorbic acid, which is an important constituent of CW. As CW is a rich source of vitamins, amino acids and enzymes, etc., more than one active principle maybe involved.

Constituents and antioxidant activity of two varieties of coconut water (Cocos nucifera L.)

“…Coconut water also possesses antioxidant properties (Leong and Shui, 2002;Skrede et al, 2004). This property was verified mainly in the coconut water in natura, and it decreases drastically with the use of thermal treatments, or the actions of Aluísio M. da Fonseca, Ayla M. C. Bizerra, João Sammy N. de Souza, et al acids or alkaline on coconut water, and with the degree of maturation of the fruits (Mantena et al, 2003).…”

Comparitive Study on Coconut Water, Carbohydrate Electrolyte Sports Drink and Sodium Enriched Coconut Drink on Measures of Hydration and Physical Performance in Athletes

“…The increasing interest in the nutraceutical properties of natural products. (2) Recently, attention has been given to coconut water, a natural attentive to manufactured sports drink, within initial evidence indicating efficacy with regard to maintaining hydration. The amount of carbohydrate in a drink will depend on circumstances.…”

The Effect of Coconut Water and Boiling on Antioxidant Activity and Total Phenolic Contents in Schizophyllum commune Fr.

“…As a result, the antioxidant activity in mushrooms is increased or loss of the ability of antioxidants is less. 17 Volvariella volvacea culture in coconut water has the highest antioxidant activity, followed by rice bran and potato broth. In S. commune culture, the highest radical scavenging activity is in rice bran and coconut water, respectively.…”