| Summary: | Sweet potatoes (Ipomoea batatas L.) has great potential and prospects for
development for the food processing industry. Sweet potato is an agricultural
commodity is susceptible to damage when stored in a longer period of time so it
needs to be done post-harvest engineering. This study aims to extend the shelf life
of sweet potatoes modified by storage in the soil. Change parameter is used as
weight loss, moisture content, hardness, chemical and physical content of .
The research was conducted by storing potatoes in the ground hole has a
length of 40 cm, width 40 cm and depth of 50 cm with a thickness variation of 2,
3, and 4 stack. Alas perforated plastic as the base after it was given a place to
store dry sand, sweet potatoes, hay, and covered with soil and so on according to
the desired storage. In the course of a study of sweet potato are also stored in
sacks and laid on the floor with both stored in ambient air. Parameters observed
periodically at intervals of 3 days. Changes in the composition of the material
before and after storage were evaluated to determine the success of the storage
process.
The results showed the rate of weight loss decreased (ks) 0.0907/day
smallest, water content (ka) 0.032/day smallest, and the level of violence (kk)
0.0101/day smallest of which are contained in 4 stacks of sweet potato.
Conventional sweet potato storage in sacks and have greater damage than
modified sweet potato storage in the soil at the end of storage, but has a small
percentage of damage on a storage period of 15 days. Overall the modified
method of storage in the soil is capable of storing sweet potatoes at least 4 weeks
with the best storage found in 4 piles treatment yams.
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