Agricultural Product Standards Act, 1990 (Act No. 119 of 1990)RegulationsGrading, Packing and Marking of Rice Kernels intended for sale in the Republic of South AfricaPart IV : Determination of other substances and grain composition24. Determination of percentage of waxy rice in parboiled rice |
The percentage waxy rice in parboiled rice shall be determined as follows—
| (a) | Obtain a working sample of at least 100g milled parboiled rice and put it into a glass beaker. |
| (b) | Add approximately 80ml of iodine working solution to soak the kernels and stir until all the kernels are submerged under the solution. Let the kernels soak in the solution for 30 seconds. |
| (c) | Pour the rice and solution into a wire basket and shake the basket slightly in order to drain out the solution. Then place the basket on a piece of tissue paper to absorb the excess liquid. |
| (d) | Pour the stained kernels into a bowl. Separate the reddish brown kernels of waxy rice from the dark blue kernels of non-waxy kernels. |
| (e) | Weigh the waxy rice portion and the non-waxy rice portion separately. |
| (d) | Express the mass thus determined as a percentage of the mass of the working sample. |
| (e) | Such percentage shall represent the percentage waxy rice in the consignment concerned. |