Thesis

The effect of Plant Concentration of Ultrasound Assisted Ethanolic Clove (Syzygium Aromaticum) Extracts on Antioxidant and Antimicrobial Activity

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Syzygium aromaticum, commonly known as cloves, is considered as one of the
richest dietary sources of antioxidant and polyphenolic compounds. The bioactivity and
antimicrobial activity of this spice is enhanced by using novel extraction techniques such as
ultrasound-assisted extraction (UAE). Sample-to-solvent ratio is one of the important factors
that impact the functional properties of plant extracts. Hence, this study aimed to optimize
the sample-to-solvent ratio for ultrasound-assisted ethanolic clove extracts. The resulting
antioxidant properties were measured through 2,2-diphenyl-1-picrylhydrazyl (DPPH), total
phenolic content (TPC), and total flavonoid content (TFC) assays. The antimicrobial
properties were measured using well diffusion technique, minimum inhibitory concentration
(MIC), and minimum bactericidal concentration (MBC) on Escherichia coli and
Staphylococcus aureus. The 2.5% (w/v) plant concentration conferred the highest
antioxidant activity (44.69 ± 3.44 μg/mL, p-value = 0.027) , TPC (90.04 ± 7.47 mg /g, p-value
=

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Availability

Detail Information

Series Title

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Call Number

FS 23-006

Publisher

i3L, Jakarta : i3L, Jakarta., 2023

Collation

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Language

English

ISBN/ISSN

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Classification

NONE

Content Type

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Media Type

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Carrier Type

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Edition

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Subject(s)

Antimicrobial Properties
Antioxidant properties
Sample-to-solvent ratio
Syzygium aromaticum
Ultrasound-assisted extraction

Specific Detail Info

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Statement of Responsibility

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