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Solvent concentration effect on antioxidant activity and total phenolic content of Malaysian herbs / Nurul Atikah Mohd Nazir

By:

Nurul Atikah Mohd Nazir [author.]

Material type: Text

text
text

Media type:

unmediated
computer

Carrier type:

volume
computer disc

ISBN:

THE0000847(Local)

Subject(s):

Dissertation note: Project Paper (Bachelor of Chemical Engineering) -- Universiti Malaysia Pahang – 2017 Abstract: Generally, herbal plants that are relatively abundant sources of antioxidant compounds with high antioxidant activities have been consume for thousands of century by world population (Amin et al., 2004, 2006; Amin & Lee, 2005). The objective of this research was to determine total phenolic content, antioxidant activities of Malaysian herbal plants. The potential of using herbal Pandanus amaryllifolius (PA), Sauropus androgynous (SA) and Persicaria odorata (PO) as a natural antioxidant for food applications were investigated. Total phenolic content (TPC) of herbs was determined using Folin-Ciocalteau reagent assay and antioxidant activity were analyzed by using 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity. The determination of TPC and antioxidant activity was done for each plant extract by using ethanol as solvent, different concentration of ethanol aqueous solutions, including 95%, 75%, 50%, 25% and 0%. Different concentration of extraction solvents significantly affected the TPC of all samples. 75% ethanol extract of Persicaria odorata (PO) exhibited the highest TPC with 6.0910 mg GAE/L extract sample. Highest antioxidant activity is also obtained by 75% ethanolic extract of PO; however all plants showed positives correlation between TPC and DPPH assay. In conclusion, all herbs exhibit the potential sources of natural antioxidant that can be used as functional food in food industry.

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Holdings ( 2 )
Title notes ( 4 )

Holdings
Item type	Current library	Call number	Copy number	Status	Date due	Barcode
Final Year Report	UMPLIB GAMBANG	FKKSA .A85 2017 r Bc. (Browse shelf(Opens below))	1	Not for loan		0000122252
Final Year Report	UMPLIB GAMBANG	CD 11206 \| FKKSA .A85 2017 r Bc. (Browse shelf(Opens below))	1	Not for loan		0000122253

Faculty of Chemical & Natural Resources Engineering

Project Paper (Bachelor of Chemical Engineering) -- Universiti Malaysia Pahang – 2017

Includes bibliographical references

Generally, herbal plants that are relatively abundant sources of antioxidant compounds with high antioxidant activities have been consume for thousands of century by world population (Amin et al., 2004, 2006; Amin & Lee, 2005). The objective of this research was to determine total phenolic content, antioxidant activities of Malaysian herbal plants. The potential of using herbal Pandanus amaryllifolius (PA), Sauropus androgynous (SA) and Persicaria odorata (PO) as a natural antioxidant for food applications were investigated. Total phenolic content (TPC) of herbs was determined using Folin-Ciocalteau reagent assay and antioxidant activity were analyzed by using 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity. The determination of TPC and antioxidant activity was done for each plant extract by using ethanol as solvent, different concentration of ethanol aqueous solutions, including 95%, 75%, 50%, 25% and 0%. Different concentration of extraction solvents significantly affected the TPC of all samples. 75% ethanol extract of Persicaria odorata (PO) exhibited the highest TPC with 6.0910 mg GAE/L extract sample. Highest antioxidant activity is also obtained by 75% ethanolic extract of PO; however all plants showed positives correlation between TPC and DPPH assay. In conclusion, all herbs exhibit the potential sources of natural antioxidant that can be used as functional food in food industry.