Galactomannans in Developing Normal and Makapuno Coconut Endosperms

Dolores  Ramirez,; Evelyn  Mendoza,

Galactomannans in Developing Normal and Makapuno Coconut Endosperms

Discipline: agriculture food and related studies

Abstract:

Galactomannan was isolated and purified from normal and makapuno coconut endosperms at different stages of development. In makapuno endosperm, galactomannan increased from 3.54% at 7-8 mo to 8.56% at 9-10 mo and slightly decreased to 8.34% at 10-11 mo. In normal endosperms, galactomannan was 5.73 and 5.80% for the first two stages and declined to 4.01% in the more mature stage.

References:

Aspinall, G. O., Hirst, E. L., Percival, E. G. V., & Williamson, I. R. (1953). The mannans of ivory nut (Phytelephas macrocarpa): Methylation of mannan A and mannan B. Journal of the Chemical Society (London), 1953, 3184–3188. https://doi.org/10.1039/JR9530003184
Albersheim, P., Nevins, D. J., English, P. D., & Karr, A. (1967). A method for the analysis of sugars in plant cell-wall polysaccharides by gas-liquid chromatography. Carbohydrate Research, 5(3), 340–345. https://doi.org/10.1016/S0008-6215(00)80508-3
McGinnis, G. D. (1982). Preparation of aldononitrile acetates using N-methylimidazole as catalyst and solvent. Carbohydrate Research, 108(2), 284–292. https://doi.org/10.1016/S0008-6215(00)81797-1
Balasubramaniam, K. (1976). Polysaccharides of the kernel of maturing and matured coconuts. Journal of Food Science, 41(6), 1370–1373. https://doi.org/10.1111/j.1365-2621.1976.tb01174 x
Mujer, C. V., Arambulo, A. S., Mendoza, E. M. T., & Ramirez, D. A. (1983). The viscous component of the mutant (makapuno) coconut endosperm: 1. Isolation and characterization. Kalikasan, The Philippine Journal of Biology, 12, 42–50.
Andrews, P., & Jones, J. K. N. (1952). Mannose-containing polysaccharides. Journal of the American Chemical Society, 74(16), 4029–4032. https://doi.org/10.1021/ja01136a018
Kooiman, P. (1971). Structure of the galactomannans from seeds of Annona muricata, Arenga saccharifera, Cocos nucifera, Convolvulus tricolor and Sophora japonica. Carbohydrate Research, 20(2), 329–337. https://doi.org/10.1016/S0008-6215(00)81353-5
Rao, C. V. N., Chowdry, D., & Bagchi, P. (1981). A water-soluble galactomannan from coconut (Cocos nucifera): Part I. Methylation studies. Canadian Journal of Chemistry, 59(3), 375–381. https://doi.org/10.1139/v81-057
Dea, I. C. M., & Morrison, A. (1975). Chemistry and interactions of seed galactomannans. Advances in Carbohydrate Chemistry and Biochemistry, 31, 241–312. https://doi.org/10.1016/S0065-2318(08)60298-6
Dey, P. M. (1978). Biochemistry of plant galactomannans. Advances in Carbohydrate Chemistry and Biochemistry, 35, 341–376. https://doi.org/10.1016/S0065-2318(08)60221-4
Mendoza, E. M. T., Samonte, J. L., Mujer, C. V., dela Cruz, N. B., & Ramirez, D. A. (1985). Galactomannan metabolism in developing normal and makapuno coconut endosperms. Transactions of the National Academy of Science and Technology (Philippines), 7, 237–247.
Aspinall, G. O. (Ed.). (1982). The Polysaccharides (Vol. 1). Academic Press.
Mujer, C. V., Ramirez, D. A., & Mendoza, E. M. T. (1984). $\alpha$-D-Galactosidase deficiency in coconut endosperm: Its possible pleiotropic effects in makapuno. Phytochemistry, 23(5), 893–894. https://doi.org/10.1016/S0031-9422(00)82595-3
Mujer, C. V., Ramirez, D. A., & Mendoza, E. M. T. (1984). Coconut $\alpha$-D-galactosidase isoenzymes: Isolation, purification and characterization. Phytochemistry, 23(6), 1251–1254. https://doi.org/10.1016/S0031-9422(00)80436-1