Chemical composition, Antioxidant capacities and storage stability of Citrus macroptera and Garcinia pedunculata fruits

Abstract

An attempt was made to gain an insight about chemical compositions and antioxidant capacities of selected underutilized fruits Satkara (Citrus macroptera) and Taikor (Garcinia pedunculata) in Sylhet, Bangladesh. The analysis showed β Carotene and Vitamin C in Satkara 22±1.50 mg/100g and 210.43±0.40 mg/100g whereas Taikor contains 45±1.00 and 142.83±2.03 mg/100g respectively. The mineral composition of both fruits is appreciable. Total polyphenol content (TPC) and total flavonoids (TF) in Satkara and Taikor were 22.76±0.52 mg GAE/100g and 18.98±0.65 mg GAE/100g, 23.38±1.0 mg RE/g and 18.33±1.12 mg RE/g respectively. The antioxidant capacities of these fruits were evaluated by DPPH and ABTS method, values expressed as TEAC (Trolox Equivalent Antioxidant Capacity). In case of ABTS showed that the value 19.06±0.18 TEAC (μM/g) and 2318.44±5.60 TEAC (μM/g); for DPPH showed 16.20±0.04 TEAC (μM/g) and 1813.88±12.62 TEAC (μM/g) in Satkara and Taikor respectively. The total polyphenol content showed the positive correlation with the antioxidant capacities and ascorbic acid contents of these fruits. Storage studies at two different temperatures at 5ºC for 15 days and -18ºC for 3 months long storage period antioxidant activity shown to be stable but vitamin C content decreases significantly. The results demonstrate that Citrus macroptera and Garcinia pedunculata fruits contained the considerable levels of nutrients and antioxidant capacity.

Proximate composition, mineral content, phytochemical analysis and in vitro antioxidant activities of a wild edible fruit (Grewia sapida Roxb. ex DC.) found in Assam of North-East India

“…It was reported by Nair et al [47] that high amount of potassium is helpful for the people taking diuretics to control hypertension and it also increases the utilization of iron. The recommended dietary allowance of sodium and potassium intake level per day for a healthy adult is not more than 2400 mg and 4700 mg respectively [39], while the recommended daily allowance value of magnesium is 400 mg per day for men of 19-30 years old and 310 mg per day for women of 19-39 years old [48]. Calcium has been reported to be effective in the building of skeletal structures, muscle functioning, while magnesium being a macro-element is important in the ionic balance and enzyme co-factors [49].…”

Study of the allelopathic activity of Garcinia pedunculata Roxb

“…In Bangladesh, it is an underutilized fruit found in the north-eastern part of the country. The mature fruit is seldom used in cooking to impart sourness in curries and pulses (Islam et al, 2015), but it has many medicinal properties including antidiabetic, antiscorbutic, antidiarrhoeic, astringent, and cardiotonic (Vo et al, 2012;Sarma et al, 2016;Ali et al, 2017). To date, many studies have explored the pharmacological activity of G. pedunculata, but no attention has been paid to its allelopathic activity.…”

Assessment of Toxicity and Beneficiary Effects of Garcinia pedunculata on the Hematological, Biochemical, and Histological Homeostasis in Rats

“…The fruit of G. pedunculata is commonly known as “Taikor” in Bangladesh and “Amlavetasa” in India [1]. The mature G. pedunculata fruit is greenish yellow and is consumed as a vegetable; it is also used as an ingredient in cooking different types of meat and chicken [2]. This fruit extract is reported to possess a variety of pharmacological benefits including antioxidant [3, 4], antimicrobial [5], anti-inflammatory [6], hepatoprotective [1], and cardioprotective properties [7].…”

“…Recently, the phytochemical composition of G. pedunculata was investigated and G. pedunculata was estimated to contain moisture 88.20%, protein 0.50%, β carotene 45.00 mg/100 g, vitamins (thiamine 0.03, riboflavin 0.02, and ascorbic acid 142.83 mg/100 g, resp. ), minerals (sodium 1.80, potassium 106.00, calcium 18.00, magnesium 23.00, iron 0.08, zinc 0.15, copper 0.12, and phosphorus 17.00 mg/100 g), phenolics (19.45 mg gallic acid/100 g), and flavonoids (18.33 mg rutin/g) [2]. The dried fruit rinds and pericarp of G. pedunculata have been reported to contain some benzophenones, pedenculol, hydroxy citric acid, garcinol, and cambogin [9], some of which are strong antioxidants.…”