Nutritional and Nutraceutical Components of Commercial Eggplant Types Grown in Sinaloa, Mexico

Abstract

The nutrimental composition and main nutraceutical components were determined in Chinese, Philippine, American, Hindu and Thai eggplant (Solanum melongena L.) types grown in Sinaloa, Mexico. Thai type showed the highest amount of protein (0.90%), crude (1.54%) and dietary (3.93%) fibre and the highest concentrations of total soluble phenolics (2049 mgCAE 100g-1) and chlorogenic acid (1700 mg 100g-1). Hindu type obtained the highest content of the minerals potassium (191.19 mg 100g-1), calcium (59.63 mg 100g-1), phosphorus (33.52 mg 100g-1), magnesium (28.96 mg 100g-1), manganese (0.44 mg 100g-1), zinc (0.78 mg 100g-1), in addition this eggplant type showed the highest levels of ascorbic acid (22 mg 100g-1). Philippine type showed the highest concentration in anthocyanins (161.10 mgC3GE 100g-1) and the highest levels of radical scavenging activity in DPPH (92.50% of inhibition) and ORAC (538.90 μmolTE g-1). Nutrient components with functional properties like biologically essential minerals, dietary fibre, ascorbic acid (vitamin C) and soluble phenols were found in higher amounts in the five eggplant types analyzed, as compared with reports from other parts in the world available in the literature.

Morphological and Nutritional Properties of Popular Eggplant Cultivars in Bangladesh

“…The range of carbohydrate content was from 4.27% to 6.63% (Table 2) The maximum content was observed in BARI Begun-6 (6.63%), Hybrid 5x216 (6.27%) and SM233 (6.05%). These results were similar to those obtained by Nino-Medina et al (2014), where they obtained a carbohydrate content ranging from 5.96% to 7.92% in different eggplant types. In our study we observed several low carbohydrate contents in eggplant cultivars which were less than 5% viz., BARI Begun-8 (4.27%), BARI Hybrid Begun-4 (4.61%), BARI Begun-4 (4.73%), Hybrid 21x11 (4.91%) and BARI Begun-10 (4.94%).…”

“…Na content varied largely in our study with a range from 4.06 to 8.51 mg 100g -1 . It was similar to the findings of Nino-Medina et al (2014), where the concentration was 5.61 to 11.54 mg 100g -1 . Ekholm et al (2007) found a similar pattern and mineral content in eggplants cultivated in Finland, as compared to our work, where K displayed the highest concentration (175 mg 100g -1 ) and Cu displayed the lowest concentration (0.03 mg 100g-1).…”

“…Ascorbic acid extraction was done according to Ozgur and Sungur (1995) with small modifications as described by Nino-Medina et al (2014). Ascorbic acid was quantified according to Doner and Hicks (1981) using a Varian Pro Star 330 photodiode array detector HPLC system and a Varian Bondesil NH2column (250 x 4.6 mm).…”

“…The lowest value was observed in BARI Begun-10 (0.02%). Nino-Medina et al (2014) analyzed the fat content in different eggplant types reporting values ranging from 0.03 to 0.04 %.…”

Effects of Infrared Radiation on Eggplant (Solanum melongena L.) Greenhouse Cultivation and Fruits’ Phenolic Profile

“…Total phenolic content of eggplant samples from the greenhouse conventionally heated and with IR ranged from 941.63 to 1493.91 mg GAE/100 g DW and from 1109.78 to 1330.56 mg GAE/100 g DW, respectively. The TPC results of the studied eggplant samples were similar to those that were reported by Hanson et al [17], for 35 eggplant species from different origins (740-1430 mg of chlorogenic acid equivalents /100 g DW), higher than those that were reported by Raigón et al [18], for 31 eggplant cultivars (562-965 mg of chlorogenic acid equivalents /100 g DW) and lower than those that were reported by Niño-Medina et al [19], for five commercial eggplant types from Mexico (1350-2049 mg of gallic acid equivalents per 100 g DW). It is important to mention that many factors may affect TPC, such as the harvesting season, the temperature, the intensity and type of light, the eggplant species, the eggplant type (wild or cultivated), the eggplant size, agronomic and genetic factors, etc.…”