Patricia, Janice (2017) Effect of jackfruit-seed starch, beeswax and plasticizers on composite edible film characteristics and its application as edible coating to strawberry fruits. Bachelor thesis, Universitas Pelita Harapan.
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Abstract
Jackfruit seed starch mixed with plasticizers has been used as edible coating to
improve the strawberry’s shelf life. Beeswax had been reported for its moisture
and oxygen barrier in the application as edible coating. This research was aimed
to investigate the effect of composite edible film consisting of jackfruit seed
starch, beeswax, and different plasticizers (glycerol or sorbitol). The
characteristics of edible film were analyzed to get three selected formulations
from each plasticizer type and used as coating to strawberry. From this research,
the formulation that were chosen from glycerol plasticized film were 5.5%-
1.8%G-10%B, due to highest tensile strength, very low WVTR, and moderate
elongation; 5.5%-1.4%G-30%B, due to lowest WVTR, moderate tensile strength
and elongation; and 3.5%-1.4%G-10%B, due to very low WVTR, very high
elongation, and moderate tensile strength. The formulation from sorbitol
plasticized fil that were chosen were 5.5%-2.2%S-20%B, due to high tensile
strength, moderate low WVTR, and moderate elongation; 4.5%-2.2%S-10%B, due
to highest tensile strength, moderate low WVTR, and moderate high elongation;
and 3.5%-1.8%S-20%B, due to very low WVTR, high tensile strength, and very
high elongation. The selected formulations were prepared as suspension and
applied on strawberry as edible coating to determine the shelf life and quality
changes at room (28-30 °C) and refrigeration (7-8 °C) temperature storage. The
quality changes observed were weight loss, hardness loss, lowered pH, lowered
total titratable acidity, increased total sugar, and increased microbial load during
storage. The shelf life of the coated strawberry was increased up to 3 days at
room temperature storage, while the uncoated strawberry as control was up to 2
days. At refrigeration storage, coated strawberry can be stored up to 20 days,
compared to uncoated strawberry, which was only 10 days. Therefore, the
composite edible coating made from jackfruit-seed starch, beeswax, and
plasticizers improved strawberry shelf life and relatively maintained the coated
fruit quality
Item Type: | Thesis (Bachelor) |
---|---|
Creators: | Creators NIM Email ORCID Patricia, Janice NIM00000000729 UNSPECIFIED UNSPECIFIED |
Contributors: | Contribution Contributors NIDN/NIDK Email Thesis advisor Pokatong, Wilbur Donald Raymond NIDN0002106402 UNSPECIFIED |
Additional Information: | SK 34-13 PAT e |
Uncontrolled Keywords: | Beeswax; composite edible film; edible coating; jackfruit seed starch; glycerol; sorbitol; strawberry |
Subjects: | T Technology > TP Chemical technology > TP368-456 Food processing and manufacture |
Divisions: | University Subject > Current > Faculty/School - UPH Karawaci > Faculty of Science and Technology > Food Technology Current > Faculty/School - UPH Karawaci > Faculty of Science and Technology > Food Technology |
Depositing User: | Users 15 not found. |
Date Deposited: | 16 Oct 2018 07:43 |
Last Modified: | 01 Oct 2021 03:57 |
URI: | http://repository.uph.edu/id/eprint/1421 |