Juliano et al. - 1993 - Grain Quality Evaluation of World Rices

Table 11. Summary of protein content and classification of milled rice based on apparent AC, final GT, and GC, by continent
and by wild rice species. IRRI, 1963-91.
Source
Sample Protein (%) Apparent AC a GT b GC c
(no.)
Range Mean Wx VL L H I H L I HI H S M H
Oryza sativa L.
Asia 1626 4-14 7.8 105 26 334 378 783 976 542 83 17 574 333 426
Australia d 24 5-10 6.7 2 0 13 7 2 17 6 1 0 19 2 1
North America 190 4-13 7.2 5 1 52 55 77 125 55 8 2 84 53 40
South America 301 5-13 7.9 0 0 72 95 134 233 58 8 2 107 82 99
Europe 233 5-13 7.0 0 0 119 106 8 217 12 3 1 137 56 20
Africa 300 5-11 7.3 0 0 53 62 185 169 117 11 2 93 64 112
Total 2674 4-14 7.7 112 27 643 703 1190 1737 790 114 24 1014 590 698
Wild species
0. glaberrima 195 9-14 12.0 0 0 4 53 138 181 14 0 0 99 66 15
Others 49 8-17 11.9 1 0 14 21 13 13 24 0 12 2 0 0
Total 244 8-17 11.9 1 0 18 74 151 194 38 0 12 101 66 15
a Wx = waxy (0-5.0%). VL = very low (5.1-12.0%). L = low (12.1-20.0%), I = Intermediate (20.1-25.0%), and H = high (>25%).
b Indexed by alkali
spreading value: L = low (6-7). I = intermediate (4-5), HI = high-intermediate (3), and H = high (2). c Only samples analyzed from mid-1971 have
gel consistency values: S = soft (61-100 mm), M = medium (41-60 mm), and H = hard (25-40 mm). d Excludes four samples from New Zealand.