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  <title>KARAKTERISASI PATI UBI JALAR UNGURNHASIL ESTERIFIKASI MENGGUNAKAN RNOKTANOIL KLORIDA</title>
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  <namePart>Uswatun Hasanah </namePart>
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  <place>
   <placeTerm type="text">Banda Aceh</placeTerm>
   <publisher>Universitas Syiah Kuala</publisher>
   <dateIssued>2015</dateIssued>
  </place>
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  <languageTerm type="text">Indonesia</languageTerm>
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 <note>ABSTRAK&#13;
Modifikasi pati ubi jalar (Ipomoea batatas (L) Lam) ungu hasil esterifikasi menggunakan oktanoil klorida telah dilakukandengan perbandingan konsentrasi pati terhadap pereaksi adalah 1:0,5, 1:1, 1:1,5 dan 1:2 (b/v) dan penambahan natrium hidroksida sebagai katalis.Pati hasil modifikasi menunjukkan penurunan nilai swelling capacity dan kelarutan dalam air.Semakin besar rasio pereaksi maka semakin rendah nilai swelling capacity dan kelarutannya.Nilai swelling capacity  dan kelarutan terendah diperoleh pada rasio 1:1,5 b/v. Derajat substitusi dan kadar oktanoil meningkat dengan semakin besarnya konsentrasi pereaksi yang ditambahkan.Pati yang telah teresterifikasi ditandai dengan adanya puncak gugus karbonil pada 1693 cm-1 pada spektrum FTIR. Hasil analisis dengan SEM menunjukkan pecahnya granula pada pati esterifikasi.&#13;
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Kata kunci : Pati, Ipomoea batatas, esterifikasi, oktanoil klorida, swelling capacity dan kelarutan&#13;
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ABSTRACT&#13;
Modification of purple sweet potato (Ipomoea batatas (L) Lam) starch by esterification using oktanoil chloride was carried out. The esterification was done with starch : oktanoil chloride ratio of 1:0,5, 1:1, 1:1,5 and 1:2 (w / v) usingsodium hydroxide as the a catalyst. The higher reactants concentraion yield of lower values of swelling capacity and solubility. The lowers value of obtained at ratio 1:1,5 w / v. Degree of substitution and oktanoil increased with the amount of reagent concentrations were added. Esterified starch marked by carbonyl group peak at 1693 cm-1 in the FTIR spectrum. SEM analysis showed that rupture of starch granules in the esterified starch.&#13;
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Keywords: starch, Ipomoea batatas, esterification, octanoil choride, swelling capacity and solubility&#13;
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  <physicalLocation>ELECTRONIC THESES AND DISSERTATION Universitas Syiah Kuala</physicalLocation>
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