Victorine, Novita (2013) Studi aktivitas antioksidan dari kulit , daging dan biji buah samolo (diospyros discolor willd.) = Study of antioxidant activity from peel, flesh and seed of velvet apple (diospyros discolor willd.). Bachelor thesis, Universitas Pelita Harapan.
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Abstract
Velvet apple is a fruit having antioxidant activity. Due to its smell and the
astringent taste, most people do not like this fruit. This study was aimed to
observed the antioxidant activity of some parts of this fruit. The peel, flesh and
seed of velvet apple were successively extracted with three types of solvent having
different polarity (n-hexane, ethyl acetate, ethanol). Antioxidant activity, total
phenolic and total flavonoid from the extract obtained were analyzed. The parts of
fruit having the highest antioxidant activity was subsequently identified with GC
MS and the presence of tannin was also qualitatively analyzed. The highest
antioxidant activity as well as total phenolic, with 20.872 ppm and 80.837 mg
TAE/g extract, was found in extract seed that obtained by ethyl acetate. The
highest total flavonoid was found in seed extract with 3.448 mg QE/g extract.
There was interaction between the types of solvent and parts of fruit that
significantly affect the result of antioxidant activity and total phenolic but only
the parts of fruit significantly affected the total flavonoid. From the qualitative
test of tannin, the result showed that the seed extract contained tannin. The result
of identification by GC-MS showed that the 1,2,3-benzetriol, phenol 2,4-bis(1,1-
2573;4=63;4=6$% @-tocopherol, and vitamin E was the component that functioned as
the source of antioxidant in velvet apple.
Item Type: | Thesis (Bachelor) |
---|---|
Creators: | Creators NIM Email ORCID Victorine, Novita NIM03420090056 UNSPECIFIED UNSPECIFIED |
Contributors: | Contribution Contributors NIDN/NIDK Email Thesis advisor Kardono, Leonardus Broto Sugeng UNSPECIFIED UNSPECIFIED Thesis advisor Wijaya, Julia Ratna NIDN305076905 UNSPECIFIED |
Additional Information: | SK 34-09 VIC s |
Uncontrolled Keywords: | velvet apple ; extracted successively ; antioxidant ; seed |
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 17 not found. |
Date Deposited: | 16 Oct 2018 07:42 |
Last Modified: | 13 Dec 2021 07:06 |
URI: | http://repository.uph.edu/id/eprint/1402 |