PHENOLIC COMPOUNDS CONTENT IN FRUITS OF DIFFERENT EGGPLANT SPECIES: S. MELONGENA L., S. AETHIOPICUM L. AND S. MACROCARPON L. - IN THE TEMPERATE CLIMATE

In the genus Solanum there are a number of less common vegetables. S. aethiopicum L. and S. macrocarpon L. are a two popular species of eggplant, traditionally grown in tropical Africa. The object of research was breeding lines and hybrids of S. melongena L. and accessions of S. aethiopicum and S. macrocarpon. Plants were grown in condition of low-capacity hydroponics according to all agrotechnical requirements. The fruits for analysis were collected from one layer of plants at the phase of technical maturity. Phenolic compounds are unique secondary metabolites that are synthesized in all plant cells and have increasingly wide application in pharmacology and medicine. Flavonoids was in the range of 0.7-1.1% in lines and F1 hybrids of S. melongena, however more flavonoids was obtained in the African eggplant accessions, such as S. aethiopicum L., 1,4% and S. macrocarpon L., 1.2%. The total content of phenolic compounds was in the range of 1.7-2.3% in the pulp of S. melongena L. fruits. The total content of phenol carbonic acids ranged from 1.0-1.5% in the lines and hybrids F1 studied, as referred to S. melongena. The content of phenol carbonic acids is higher from 1.5% to 1.8% in S. aethiopicum and S. macrocarpon. In the pulp of the interspecific hybrid fruits the total content of flavonoids and phenol carbonic acids was 2.6-2.7% that was 1.5 times as much as in S. melongena.

Solanum melongena, Solanum macrocarpon, Solanum aethiopicum, phenolic compounds, Africa

1. Беликов В.В. Методика определения флавоноидных соединений. Фармация, 1970, № 1, с.68

2. Волобуева В.Ф., Шатилова Т.И. Практикум по биохимии овощных, плодовых, ягодных, эфироносных и лекарственных культур. Москва, 2008, c. 45-47.

3. Пупыкина К.А., Кудашкина Н.В. Изучение возможности пряно-ароматических и эфирномасличных растений для экопротективной помощи населению // Вестник ОГУ, 2009, № 6, с.499-502

4. Acikanu C.T., Eze P.E., Ude C.M., Ugwuokolie O.C. Determination of vitamin and mineral composition of common leafy vegetables in Southern Nigeria. International Journal of current Microbiology and Applied Sciences, 2013, 2, pp. 347-353.

5. Bello S.O., Muhammad B.Y., Gammaniel K.S., Abdu-Aguye I., Ahmed H., Njoku C.H., Pindiga U. H., Salka A.M. Preliminary Evaluation of the Toxicity and Some Pharmacological Properties of the Aqueous Crude Extract of Solanum melongena. Res. J. Agric. Biol. Sci., 2005, 1(1), pp. 1-9

6. Chinedu S.N., Olasumbo A.C., Eboji O.K., Emiloju O.C., Arinola O.K., Dania D.I. Proximate and Phytochemical analysis of Solanum aethiopicum L. and Solanum macrocarpon L. fruits. Research Journal Chemical Sciences, 2011, v.1 (3), pp. 63-71

7. Cieslik E., Gręda A., Adamus W. Contents of polyphenols in fruit and vegetables // Food Chem. – 2006, Vol.94, № 1. – P.135-142.

8. Direction de l'Horticulture, Ministиre de l'Agriculture du Sénégal. 1994. Estimation de la production légumière au Sénégal, campagne 1993-1994.

9. Grubben G.J.H., Denton O.A. Plant Resources of Tropical Africa Vegetables. Ponennad Looijenhv, Wageningen, 2004, p.667.

10. Lester R. N., Seck A. Solanum aethiopicum L. In: Grubben G. J. H. et O.A.Denton (Eds.). Ressources végétales de l’Afrique tropicale 2. Légumes. FondationProta, Backhuys Publishers, Wageningen, Pays Bas: 2004, pp. 530 - 536.

11. Odetola A.A., Iranloye Y.O. and Akinloye O. Hypolipidaemic Potentials of Solanum melongena and Solanum gilo on Hypercholesterolemic Rabbits, Pak J. Nutri.,2004, 3(3), pp. 180-187

12. Offor C.E., Igwe S.U. Comparative analysis of the vitamins composition of two different species of Garden Egg (Solanum aethiopicum and Solanum macrocarpum. World Journal of Medical Sciences, 2015, 12 (3), pp. 274-275.

13. Sodipo O.A., Abdulrahman F.I., Akan J.C., Akinniyi J.A. Phytochemical Screening and Elemental Constituents of the fruit of Solanum macrocarpum Linn. Continental Journal of Applied Sciences, 2008, v.3, pp. 85-94

14. Sodipo O.A., Abdulrahman F.I., Alemika T.E., Gulani I.A. Chemical Composition and Biological Properties of the Petroleum Ether Extract of Solanum macrocarpum L. (Local name: Gorongo). British Journal of Pharmaceutical Research, 2012, v.2, No. 2, pp. 108-128

15. Tateyama C., Igarashi K. Anthocyanin and chlorogenic acid contents of some selected eggplant (Solanum melongena L.) cultivars, and the radical scavenging activities of their extracts // J. Japan. Soc. Food Sci. Tech., 2006. Vol.53, №.4. – pp. 218-224.

16. Tindal H.D. Fruits and Vegetables in West Africa (London: Oxford University Press) 2nd ed., 1965, 5(8), p. 105