VITAMIN A FORTIFIed PEANUT BUTTER - The Official Website of ...

VITAMIN A FORTIFIed PEANUT BUTTER - The Official Website of ... VITAMIN A FORTIFIed PEANUT BUTTER - The Official Website of ...

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STEP DETAILED DESCRIPTION 4. DRY BLANCHING Sorted shelled peanuts are roasted to a specified color at a specified time and temperature. During roasting, peanuts are agitated for even roasting of kernels (PCRSP, 2002). 5. COOLING Roasted peanuts are cooled to a maximum temperature of 65°C in a stainless steel vat with the use of a blower. Peanuts are agitated or mixed thoroughly with a stainless steel paddle to hasten cooling. 6. DE-SKINNING The skin of the peanuts breaks loose from the kernel during the cooling step as the nuts are agitated with a stainless steel paddle. The loose skins are manually removed with the aid of a blower. 7. SORTING OF DE- SKINNED PEANUTS 8. FINAL ROASTING OF DE-SKINNED PEANUTS De-skinned peanuts are 100% sorted for damaged or moldy kernels. Sorted peanuts are again roasted to the desired color at a specified time and temperature. 9. SIEVING Refined sugar and salt are sieved to remove iron and metal filings and other foreign matters such as hair, dirt, tiny pieces of stones, wood and plastic materials. 10. WEIGHING OF PEANUTS AND INGREDIENTS Pre-determined amounts of de-skinned peanuts, refined sugar and refined salt are weighed which correspond to one production batch of plain peanut butter. 11. MIXING The ingredients are mixed manually in stainless steel drums or vats before passing through the grinder. 12. GRINDING Grinding of the mixture is done by passing it through a mill at a specified setting. The mixture is ground until a very smooth and thick paste known as peanut butter is obtained. 13. COOLING OF PLAIN PEANUT BUTTER AT 65°C The peanut butter is transferred to stainless steel vats after grinding to cool. The product is brought to room temperature before use in the preparation of peanut butter premix for fortified peanut butter. The temperature of the plain peanut butter must not exceed the maximum limit of 65°C as significant losses in vitamin A will take place at temperatures higher than 65°C (Willich et al., 1954). 231

6.2 Preparation of Peanut Butter Premix STEP DETAILED DESCRIPTION 14. BRINGING FORTIFICANT TO AMBIENT TEMPERATURE, 30°C Vitamin A palmitate, which is stored in the chiller at 4°C, is allowed to come up to room temperature of 30° overnight prior to use. This is done to obtain a homogeneous distribution of vitamin A in the oil. Storage of the fortificant in a chiller causes crystallization of the fortificant. The entire content is then portioned into smaller amounts equivalent to that required for a single production batch of peanut butter premix. 15. WEIGHING OF Plain peanut butter and vitamin A are weighed accurately. The FORTIFICANT AND PLAIN PEANUT BUTTER fortificant is weighed in a top loading balance in a wide-mouthed amber colored bottle with cover. 16. MANUAL MIXING The fortificant and plain peanut butter are mixed manually in a stainless steel container. The fortificant is added directly at the center of the container of the pre-weighed plain peanut butter and mixed immediately to protect the fortificant from light. Before mixing, the internal temperature of the plain peanut butter should not be more than 65°C to prevent degradation of the fortificant when added. A small amount of the pre-weighed peanut butter is added into the container of the fortificant to scrape off any adhering fortificant. The peanut butter/fortificant mixture is mixed manually in circular strokes using a rubber spatula until no sign of the fortificant is visible at the surface of the peanut butter mixture. 17. MIXING IN HORIZONTAL MIXER 18. WEIGHING AND PACKING OF PEANUT BUTTER PREMIX The mixture is transferred to the horizontal mixer for thorough mixing of the peanut butter and fortificant. The mixer is set to low speed for even mixing for 10 minutes. The mixer is turned off every five minutes to scrape off peanut butter mixture that splatters at the sides of the mixer. The temperature of the mixture is monitored so as not to exceed 65°C during mixing. Peanut butter premix is weighed and packed in rigid plastic containers with cover. The weight per container is equivalent to that required for use in a production batch of the vitamin A fortified product. 232

STEP DETAILED DESCRIPTION<br />

4. DRY BLANCHING Sorted shelled peanuts are roasted to a specified color at a specified<br />

time and temperature. During roasting, peanuts are agitated for even<br />

roasting <strong>of</strong> kernels (PCRSP, 2002).<br />

5. COOLING Roasted peanuts are cooled to a maximum temperature <strong>of</strong> 65°C in a<br />

stainless steel vat with the use <strong>of</strong> a blower. Peanuts are agitated or<br />

mixed thoroughly with a stainless steel paddle to hasten cooling.<br />

6. DE-SKINNING <strong>The</strong> skin <strong>of</strong> the peanuts breaks loose from the kernel during the<br />

cooling step as the nuts are agitated with a stainless steel paddle.<br />

<strong>The</strong> loose skins are manually removed with the aid <strong>of</strong> a blower.<br />

7. SORTING OF DE-<br />

SKINNED<br />

<strong>PEANUT</strong>S<br />

8. FINAL ROASTING<br />

OF DE-SKINNED<br />

<strong>PEANUT</strong>S<br />

De-skinned peanuts are 100% sorted for damaged or moldy kernels.<br />

Sorted peanuts are again roasted to the desired color at a specified<br />

time and temperature.<br />

9. SIEVING Refined sugar and salt are sieved to remove iron and metal filings<br />

and other foreign matters such as hair, dirt, tiny pieces <strong>of</strong> stones,<br />

wood and plastic materials.<br />

10. WEIGHING OF<br />

<strong>PEANUT</strong>S AND<br />

INGREDIENTS<br />

Pre-determined amounts <strong>of</strong> de-skinned peanuts, refined sugar and<br />

refined salt are weighed which correspond to one production batch<br />

<strong>of</strong> plain peanut butter.<br />

11. MIXING <strong>The</strong> ingredients are mixed manually in stainless steel drums or vats<br />

before passing through the grinder.<br />

12. GRINDING Grinding <strong>of</strong> the mixture is done by passing it through a mill at a<br />

specified setting. <strong>The</strong> mixture is ground until a very smooth and<br />

thick paste known as peanut butter is obtained.<br />

13. COOLING OF<br />

PLAIN <strong>PEANUT</strong><br />

<strong>BUTTER</strong> AT 65°C<br />

<strong>The</strong> peanut butter is transferred to stainless steel vats after grinding<br />

to cool. <strong>The</strong> product is brought to room temperature before use in<br />

the preparation <strong>of</strong> peanut butter premix for fortified peanut butter.<br />

<strong>The</strong> temperature <strong>of</strong> the plain peanut butter must not exceed the<br />

maximum limit <strong>of</strong> 65°C as significant losses in vitamin A will take<br />

place at temperatures higher than 65°C (Willich et al., 1954).<br />

231

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