Phenolic Constituents and Antioxidant Capacity of Four Underutilized Fruits from the Amazon Region

Abstract

The Amazon region comprises a plethora of fruit-bearing species of which a large number are still agriculturally unimportant. Because fruit consumption has been attributed to an enhanced physical well-being, interest in the knowledge of the chemical composition of underexplored exotic fruits has increased during recent years. This paper provides a comprehensive identification of the polyphenolic constituents of four underutilized fruits from the Amazon region by HPLC/DAD-ESI-MS(n). Araçá ( Psidium guineense ), jambolão ( Syzygium cumini ), muruci ( Byrsonima crassifolia ), and cutite ( Pouteria macrophylla ) turned out to be primarily good sources of hydrolyzable tannins and/or flavonols. Additionally, different flavanonols and proanthocyanidins were identified in some fruits. The antioxidant capacity was determined by using the total oxidant scavenging capacity (TOSC) assay. Cutite showed the highest antioxidant capacity followed by jambolão, araçá, and muruci.

Jamun (<i>Syzygium cumini </i>(L.)): A Review of Its Food and Medicinal Uses

“…The juice of the ripe fruit, or a decoction of the fruit, or jambolan vinegar, may be administered in India in cases of enlargement of the spleen, chronic diarrhea and urine retention [16,38]. Water-diluted juice is used as a gargle for sore throat and as a lotion for ringworm of the scalp [16,38].…”

“…Water-diluted juice is used as a gargle for sore throat and as a lotion for ringworm of the scalp [16,38]. Jambolan juice and mango juice, half and half, quench thirst in diabetics [38].…”

“…Extracts of both, but especially the seeds, in liquid or powdered form [61], are freely given orally, two or three times a day to patients with diabetes mellitus or glycosuria [38]. In many cases, the blood sugar level reportedly is quickly reduced and there are no ill effects [38].…”

“…In many cases, the blood sugar level reportedly is quickly reduced and there are no ill effects [38]. Fresh seeds are considered superior to dried seeds [62].…”

Comparative study of Eugenia jambolana seed and pulp for antidiabetic action on alloxan induced diabetic rats

“…In comparison to other non-traditional fruits jambolao showed considerable high antioxidant activity, which can constituent such as anthocyanins, tannins and flavonols. 6 Seeds contains phytochemicals like Jambosine, gallic acid, ellagic acid, corilagin, 3,6-hexahydroxy diphenoylglucose, 1-galloylglucose, 3-galloylglucose, quercetin, β-sitoterol, 4,6-hexahydroxydiphenoylglucose. 7,8 Keeping this in view, the present study was aimed for comparing the effect of Eugenia jambolana seed with Eugenia jambolana pulp on blood glucose level in alloxan-induced diabetic albino rats.…”