| Summary: | Microencapsulation is a method that has widely used to protect bioactive
materials contained in liquid smoke. Soluble solid as the result of extraction and
enzymatic hydrolysis of cassava, yellow sweet potato, and white sweet potato was
used as wall material. Wall material was added to 150 ml of liquid smoke before
maltodextrin addition to attain Total Soluble Solid (TSS) concentration of 20%, 25%,
and 30%. Liquid smoke was then capsulated using spray drying method with inlet
temperature and flow rate of 1300C and 5 ml/minutes, respectively. The objectives of
this study were to characterize soluble solid obtained from extraction and enzymatic
hydrolysis of cassava, yellow sweet potato, and white sweet potato as encapsulant
and its application in liquid smoke microencapsulation. Evaluation parameters were
total phenol analysis, microcapsule morphology, phenol staining, moisture content,
particle size distribution, microencapsulation efficiency, and phenol profile analysis
using GC-MS. Data obtained was then statistically analyzed using SPSS 17.00
version software. Results showed that highest phenol content in microcapsule
prepared using soluble solid from cassava and white sweet potato obtained from 20%
TSS, which were 3.54% and 2.05%, respectively, while yellow sweet potato obtained
from 30% TSS which was 2.55%. Highest microencapsulation efficiency and
moisture content obtained from 30% TSS for cassava, white sweet potato and yellow
sweet potato, which were 79.32%, 64.61%, 86.85% and 3.84%, 3.91%, 4.71%,
respectively. Microcapsule morphology analysis showed that soluble solid
application as encapsulant able to protect liquid smoke bioactive materials, while
particle size distribution analysis showed the diversity of microcapsule particle size.
Phenol staining and phenol profile analysis using GC-MS indicated that phenolic
compounds was well-encapsulated by wall material
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