Determine the quality of various food grains, Biology

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Q. Determine the quality of various food grains?

After undertaking this activity, you will be able to:

• determine the various fractions involved with the physical examination of grains,and

• check the nonconformance of grains in terms of physical examination to the standards.

Materials Required

For conducting the activity we would require the following materials:

• Food Grains* (list any seven food grains which you shall evaluate):

• Scoop, dipper or borer to remove a unit from bulk material and from packages

• Weighing machine

• Clean brush for collecting the fractions

• Tared butter paper or poly packs for keeping the fractions.

(* Food grains can be bajra, jowar, arhar dal, wheat grains, rice, channa whole etc., the minimum packing should be at least 250 g).

Methodology

Follow the following steps to carry out the activity:

1) Place the sample on a hard, clean, level surface.

2) Mix the sample thoroughly.

3) Divide the sample into four approximately equal portions.

4) Combine two diagonally opposite portions, including all fine material, and weigh.

5) If sample does not meet the minimum required weight, then set the sample aside and carry out the quartering process for the remaining mixture.

6) Each additional sample, using the quartering process, is to be added to the original sample until the minimum weight is obtained.


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