Abstract
Seed from avocado (Persea Americana) and kluwih (Artocarpus camansi) fruit are waste and by product from processing fruit. Due to the high starch content from both seeds, there are many extractions process have been applied. The immersed raw material in sodium metabisulfite solution affected to starch properties. The purpose of this study is to characterize of starch extracted with and without immersed in sodium metabisulfite solution. The results showed that the starch yield by immersed in alkaline solution was 21.6% for avocado seed starch and 24.4% for kluwih seed starch, while yield without immersed in sodium metabisulfite solution was 17.5% and 18,2% for avocado seed starch and kluwih seed starch, respectively. The starch content with sodium metabisulfite immersion process of avocado seed and kuwih seed were 79.26% and 72.62%, respectively. Meanwhile without the immersion process resulted starch of 75.13 and 67.30%, in avocado seed starch and kluwih seed starch, respectively. Furthermore, XRD and FTIR analysis were also carried out on starch to see the crystallinity character and functional groups contained in the extracted starch.
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