Difference between revisions of "Team:Paris Bettencourt/Protocols/titration-acid-phytic"
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<li><b>Preparation of reagent solutions (not supllied) :</b></li> | <li><b>Preparation of reagent solutions (not supllied) :</b></li> | ||
<ul> | <ul> | ||
− | <li><i>Trichloroacetic acid (50% w/v) : 100mL</i></li> | + | <li><i><b>Trichloroacetic acid (50% w/v) : 100mL</b></i></li> |
<li>Add 50g of thrichloroacetic to 60mL of distilled water and dissolve. Make to volume (100mL) with distilled water. (Stable for > 6 moths at 4°C)</li> | <li>Add 50g of thrichloroacetic to 60mL of distilled water and dissolve. Make to volume (100mL) with distilled water. (Stable for > 6 moths at 4°C)</li> | ||
− | <li><i>Hydrochloric acid (0.66M) : 1L</i></li> | + | <li><i><b>Hydrochloric acid (0.66M) : 1L</b></i></li> |
<li>Add 54.5mL of hydrochloric acid to 945.5mL of distilled wtaer an mix. (Store at room temperature)</li> | <li>Add 54.5mL of hydrochloric acid to 945.5mL of distilled wtaer an mix. (Store at room temperature)</li> | ||
− | <li><i>Sodium hydroxide (0.75M) : 200mL</i></li> | + | <li><i><b>Sodium hydroxide (0.75M) : 200mL</b></i></li> |
<li>Add 6g of sodium hydroxide pellets to 180mL of distilled water and dissolve. Make to volume (200mL) with distilled water. (Store at room temperature)</li> | <li>Add 6g of sodium hydroxide pellets to 180mL of distilled water and dissolve. Make to volume (200mL) with distilled water. (Store at room temperature)</li> | ||
− | <li></li> | + | <li><i><b>Phytic acid :</b></i></li> |
− | <li></li> | + | <li>Pure phytic acid control sample may be required.</li> |
− | + | </ul> | |
− | <li> | + | <li><b>Sample extraction :</b></li> |
− | + | <ul> | |
+ | <li>Weigh 1g of sample material.</li> | ||
+ | <li>Add 20mL of hydrochloric acid (0.66M).</li> | ||
+ | <li>Cover with foil and incubate for a minimum of 3 hours at room temperature.</li> | ||
+ | </u> | ||
+ | <li></li> | ||
+ | <li></li> | ||
+ | <li></li> | ||
+ | </ul> | ||
</td> | </td> | ||
</tr> | </tr> | ||
</table> | </table> | ||
{{Paris_Bettencourt/footer}} | {{Paris_Bettencourt/footer}} |
Revision as of 14:48, 28 August 2015