PERUBAHAN SIFAT FISIK KELAPA PARUT SELAMA PROSES PENYANGRAIAN DENGAN MEDIA PEMANAS AIR

• Main Authors: , LYDIA AGUSTINA SINAGA, , Hanim Zuhrotul Amanah, STP., MP.
• Format: Theses and Dissertations NonPeerReviewed
• Published: [Yogyakarta] : Universitas Gadjah Mada 2014
• Subjects: ETD
• Online Access: https://repository.ugm.ac.id/132614/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=73153
• Institution: Universitas Gadjah Mada

Productivity of coconut fruit is often abundance when harvesting season occurs, so that the price of coconut fruit are likely to decline. Abundance production at the farmer level has not been exploited and processed into derivative products such as dried shredded coconut product (desiccated coconut). This is caused by the lack of simple technology to dry the shredded coconut that can produce quality product and easy to operate. This research aim to evaluate the effectiveness of using roasting method for manufacturing dry shredded coconut by evaluated the physical changes of desiccated coconut. This research is done with 3 temperature variation such as 50oC, 60oC, 70oC and 2 size coconut shredded. Moreover, this process is done with 3 variation of concentrate sodium bisulfite which added for maintain color of product. Physical changes of shredded coconut are observed during roasting process at 20 minutes intervals time. Bisulfite residue which left in shredded coconut is analyzed to determine the maximum limit for using sodium bisulfite safety. The results showed that the bulk density tends to decline during roasting process with constant change rate is about 0.0023 to 0.0036 for the finely shredded coconut and 0.0020 to 0.0030 for coarse coconut. Shredded coconut color brightness levels also decreased during the roasting process with the change rate is variated and influenced by the concentration of added bisulfite. From this analysis is known that the addition of 5 ml of bisulfite with concentration 0-40 ppm in 1 kg shredded coconut produce products with residual bisulfite 39.2761 for finely shredded coconut and 37.4452 for coarse coconut and this residues are still below the allowable standard.