In the experimental study. Study of the structure of plant leaf on the ability to inhibit the bacteria genus Bacillus spp. To wrap rice from local wisdom! Purpose to compare between the structure of the plant leaf to slow the preservative effect of rice and the ability of inhibition of bacteria genera Bacillus. Spp. Of leaves, wrapped in rice, to reduce the use of plastic bags by step 1 study the structure of the plant leaf 4 types, including banana Banana leaf and leaf guava and lotus leaf. The structure of the plant leaf each kind to compare Number of stomata under the microscope, the surface leaves skin after leaf is studied under the camera stereo. Thickness of leaves with Virginia near The structure of the leaves that delay rice well spoiled is Irish can slow down the preservative effect of rice, and sticky rice as well. And leaves the skin to help slow the preservative effect of rice well is because behind the banana ตึงมี rear leaf stomata few. So there is little to wrap rice transpiration inside with the moisture less as well. The preservative effect of rice slow down and, in the process 2 study the ability to inhibit the bacteria genus Bacillus spp. Crude extracts by the leaf of each plant species 8 grams. To bite with solvent hexane, acetone in the ratio of 100: 100 ml for 7 back and bring its to evaporate to dry extract rough. After the filter paper soaked in disinfectant and crude extract for 1 night. Used for test the ability to inhibit the bacteria genus Bacillus spp. In food NA and observe the clear zone.The results showed that the crude extract of Irish effective in inhibition of bacteria genera Bacillus spp. Best by the clear zone average diameter 1.5 cm. The crude extract of lotus leaf, banana and guava. Can't contain it.So the rice wrapped with behind the leaves of the Irish will slow the preservative effect of rice. And the crude extract of Irish has the ability to inhibit the bacteria genus Bacillus spp. Best.
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