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Chemical composition, vitamins and minerals of a new cultivarof lychee (Litchi chinensis cv. Tailandes) grown in Brazil

Published online by Cambridge University Press:  03 October 2014

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Abstract

Introduction. Different cultivars of lychee are produced all around theworld and to date no information has been published on the nutritional value ofcv. Tailandes, which is a new lychee cultivar introduced into Brazil and other tropicalcountries. Our study performed a pioneering evaluation of the physical and chemicalcharacteristics, carotenoids, vitamins, and minerals in pulp of fruit of this cultivar.Materials and methods. Titratable acidity was determined by volumetricneutralization, pH by potentiometry, soluble solids by refractometry, moisture bygravimetry after oven drying, ash by calcination in a muffle furnace, proteins by themicro-Kjeldahl method, dietary fibers by the gravimetric non-enzymatic method and lipidsby gravimetry after extraction in ethyl ether. Vitamin C (ascorbic and dehydroascorbicacids) and carotenoids (a-carotene, b-carotene, b-cryptoxanthin and lycopene) wereanalyzed by high-performance liquid chromatography (HPLC) with diode array detection,vitamin E (a-, b-, g- and d-tocopherols and tocotrienols) was analyzed by HPLC withfluorescence detection, and fourteen minerals were analyzed by atomic absorptionspectrometry in inductively coupled plasma. Results and discussion. Thelychee cv. Tailandes showed high pulp yield (59.0%), moisture (80.7 mg×100 g–1) anddietary fiber (2.2 g×100 g–1), and a low total energy value (70.2 kcal×100 g–1). Itpresented no carotenoids, but was an excellent source of vitamin C (34.7 mg×100 g–1). Thetotal vitamin E content was 117.0 g×100 g–1. Pulp of lychee cv. Tailandes was shown to bea source of iron (0.86 mg×100 g–1) and magnesium (12.90 mg×100 g–1), a good source ofcopper (0.12 mg×100 g–1) and an excellent source of potassium (1067.33 mg×100 g–1).Conclusion. The lychee cv. Tailandes showed high pulp yield and low totalenergy. The pulp is a source of dietary fiber, vitamin C, iron, magnesium, copper andpotassium.

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© 2014 Cirad/EDP Sciences

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