Physical Properties and Glycemic Index of Organic and Conventional Black Rice Grown in Bali Indonesia
Abstract
Similar variety of black rice was grown by organic and conventional methods in Jatiluweh and Penatih districts of West Bali, respectively, separated by 46 km distance. Both rice are very similar having black pericarp and white rice inside. In this study we found that the degree of crystallinity of the two rice is about 24%. The Bragg parameters of the conventional rice are very close to α-amylose dehydrate, whereas the organic rice exists in polymorphic form. The crystallites in the endosperm area are dominated by polyhedral shape in contact with each other at the edges and formed a cyclic geometric environment. The size of the crystallites was between three and six microns. On the whole the crystallites are packed in rectangular blocks connected with one another radially from the centre towards the pericarp. XRF experiments show both rice contain P, K, S, Si, Mg, Cl, Al, Zn, Fe, Cu and Rb. However, ruthenium and manganese were detected in the organic rice. Both organic and conventional black rice possess low glycemic index of about 31±5.0 compared to 50±5.8 for commercial Basmati rice. Thermogravimetric investigation showed that the black rice was stable up to about 300°C and the gradual mass loss between 80 and 210°C is due to  water molecules and additional components presence in the rice. After the major decomposition at 310°C the mass gradually decreased and reached 18% residual at 600°C.
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Ramachandra, A., Ma, M.C.A. and Snehalatha, C. Diabetics in Asia. Lancet 375: pp 408-418. 2010.
Internatioal Diabetes Federation, Diabetes Atlas, 4th edition. International Federation, Brussel. 2009. Availabe http://www.diabetesatlas.org and http://www.atla.idf.org 10 March 2010.
Shaw, J.E., Sicree, R.A. and Zimmet, P.Z. Global estimates of the prevalence of diabetes for 2010 and 2030. Diabetes Res Clin Pract 87. pp 4-14.2010.
Nanri, A., Mizoue,T. Yoshido, D. Takaahashi, R. and Takayagi, R. Dietary patterns and A1C in Japanese men and women. Diabetes Care. 31 pp.1568-73. 2008.
Shen, Y., Jin, L., Xiao, P., Lu,Y and Bao, J. Total phenolics, flavonoids, antioxidant capacity in rice grain and their relations to grain color, size and weight. Journal of Cereal Science, 49, 1,106-111. 2009.
Ghosh, S., Datta, K. and Datta, S.K. Rice vitamins. Rice Chemistry and Technology (edited by Jingsong Bao, 4th edn), 7, 195-220. 2019. https://doi.org/10.1016/B978-0-12-811508-4-00007-1.
Kuswaha,U.K.S. Black rice anthocynon content increases with increase in altitude of its plantation . Adv Plants Agric Res. 5(1), 469-472, 2016.
Wang, Li-Shu. and Stoner, G.G., Anthocyanins and their role in cancer prevention. Cancer Lett. October 8; 269(2): 281–290. 2008. doi: 10.1016/j.canlet.2008.05.020
Shah, K. and Shah, P. Effect of Anthocyanin Supplementations on Lipid Profile and Inflammatory Markers: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Cholesterol(Hindawi), 1-12, 2018. https://doi.org/10.1155/ 2018 /8450793
Lestari, P., Utami, D.W., Rosdianti, I. and Sabran, M. Morphological variability of Indonesian rice germplasm and the associated SNP markers. Emirates Journal of Food and Agriculture. 28(9): 660-670,2016. DOI: 10.9755/ejfa.2016-03-319
Thomson, M.J., Polato, N.R.,Prasetiyono, J., Kurniawan R., Silitonga,T.S. and McCouch, S.R. Genetic Diversity of Isolated Populations of Indonesian Landraces of Rice (Oryza sativa L.) Collected in East Kalimantan on the Island of Borneo. Rice,2, 1, pp 80–92. 2009.
Lestari, P., Reflunar and Koh, H-J. Prediction of Physicochemical Properties of Indonesian Indica Rice Using Molecular Markers. HAYATI Journal of Biosciences, 21, 2, 76-86. 2014. DOI: 10.4308/hjb.21.2.76
Mursyidin, D.H., Purnomo , Sumardi, I. , and Daryono, B.S. Phenotypic diversity of the tidal swamp rice (Oryza sativa L.) germplasm from South Kalimantan, Indonesia. AJCS 13(03):386-394. 2019. doi: 10.21475/ajcs.19.13.03. p1268
Sholikhah, U., Parjanto, Handoyo,T., and Yunus, A. Morphological characters of several black and aromatic rice(Oryza sativa L.) in Indonesia. International Conference on Biology and Applied Science (ICOBAS) AIP Conf. Proc. 2120, 030029-1-7. 2019. https://doi.org/10.1063/1.5115633.
Juliano, B.O. A simplified assay for milled rice amylose. Cereal Science Today 16: 334-338.1971.
Wolever, T.M.S., Jenkins, D.J.A., Jenkins, A.L. and Josse, R.G. “The glycemic index :methodolgy and clinical implications†American Journal of Clinical Nutrition, vol.54, no.5, pp.846-854, 1991.
Wolever, T.M.S., Vorster, H.H. Björck, I. Determination of the glycemic index of foods: inter-laboratory study. European Journal of Clinical Nutrition, vol 57, no.3, pp. 475-482. 2003.
Bahado-Singh, P.S., Wheatly, A.O., Ahmad, M.H., Morrison, E.Y. and Asemota, H.N. Food processing methods influence the glycemic indices of some commonly eaten West Indian carbohydrate-rich foods. British Journal of Nutrition, vol.96, no.3, pp. 476-481, 2006.
Neyman,J. On the 2 different aspects of representation methods: The method of Stratifed Sampling and the method of Purposive Selection. Journal of The Royal Statistical Society, vo. 97, No. 4, pp. 588-625. 1934.
Etikan,I. Musa, S.A.,Alkassim, R.S., Comparison of Convenience Sampling and Purposive Sampling. American Journal of Theoretical and Applied Statistics, vol.5, No.1, pp. 1-4. 2016.
Miller, J.B., Pang, E., and Bramall, L. Rice: A high or low glycemic index food. American Journal of Clinical Nutrition, vol.56, no.6, pp.1034-36. 1992.
Sharma, Y. Elementary organic spectroscopy 3rd Edn.: S Chand & Company Ltd. Ram Nagar New Delhi, India.
Silverstein, R.M., Webster , F.X. and Kiemle, D. Spectrometric identification of organic compounds 7th Edn: John Wiley & Sons:Hoboken, NJ. USA.
Helena, A.R. and Syahira, I. NIR spectroscopy measurement: the assessment of amylose content in rice grain. Sensor and Transducers 156(9). pp 251-258. 2013.
Kubo, A., Yugichi, Y., Suzuki, S. Satoh, H and Kitamura, S. The use of micro beam X-ray diffraction for the characterisation of starch crystal structure in rice mutant kernels of waxy, amylose extender and sugary. Journal of Cereal Science, 48, pp.92-97. 2008.
Wani, A.A., Singh, P., Shah, M.A., Scweiggert, W.U., Gul,K. and Wani.I.A. Rice starch diversity: Effect on structural and morphological, thermal and physicochemical properties of six wild rice starchs- a review. Comprehensive review in food science and food safety, 11(5), pp.417-436. 2012.
Eckhoff, B., Kanngie Ber, B., Langhoff, N., Wadel, R. and Wolf, H. Handbook of Practical X-Ray Flourescence Analysis. ISBN 3-540-28603-e 2006..
Kaur, J. and Kumar, A. Elemental analysis of different varieties of rice samples using XRF technique. AIP Conference Proceedings 1, vol.1728. 020350.2016. https://doi.org/10.1063/1.4945401
Fleming, D.E., Foran, K.A. Kim, J.S. and Guernsey, J.R. Portable X-Ray fluorescence for assessing trace elements in rice and rice products: Comparison with inductively-mass spectrometry. Appl Radiant Isot, 104217-23, doi: 10.1016/j.apradiso.2015.07.014.
Chuparina, E.V. and Azovsky, M.G. Elemental analysis of aquatic plants by X-ray fluorescence. Analytical Letters, vol.49, 12, pp. 1963-73. 2016.
Andrianiaa, S.P.R., Abd Hamid, M.H.N. ,Sahrom, M.S. and Yamin, B.M. Physical Properties and Glycemic Index Studies of Singaraja White Rice Grown by Conventional and Organic Methods in Denpasar Bali Indonesia. Ijeaset, 8,5, 2256-2262. 2018.
Thomas, R., Wan-Nadiah, W. A. and Bhat, R.Physiochemical properties, proximate composition, and cooking qualities of locally grown and imported rice varieties marketed in Penang, Malaysia. International Food Research Journal 20(3): 1345-1351. 2013.
Millet, W. Manson, J. and Liu, S. Glycemic index, glycemic load and risk of type-2 diabetes. Am J Clin Nutr 76, pp 2745-2805. 2002
Khor, Se.C.H.,B.H. and Karupaiah, T. Prospects in development of quality for human nutrition. Malays. Appl. Biol44(2): 1–31. 2015.
DOI: http://dx.doi.org/10.18517/ijaseit.10.4.10932
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