Effects of guava Psidium guajava leaves extract coating on giant freshwater prawn Macrobrachium rosenbergii during chilled storage

Nurul Afza Karim, . and Izzah Rakinah Abd Rahman, . and Mhd Ikhwanuddin, . and Nurul Ulfah Karim, . and Mohamad Khairi Mohd Zainol, . Effects of guava Psidium guajava leaves extract coating on giant freshwater prawn Macrobrachium rosenbergii during chilled storage. pp. 159-167. ISSN 1823-8556

Guava Psidium guajava leaf extract was tested for antioxidant properties and activity; total phenolic content total flavonoid content (TFC) 2 2-diphenyl-1-picrylhydrazyl (DPPH) and ferric-reducing antioxidant power (FRAP). Giant freshwater prawns Macrobrachium rosenbergii were subjected to P. guajava leaf extract coating at concentrations of 0.5 and 1.0. Controls were left untreated. All samples were individually vacuum packed before chilled storage at 4C. Total bacteria count and total volatile basis nitrogen were analysed at five day interval during 15 days of chilled storage. The total phenolic content TFC DPPH and FRAP values were recorded at 383.6715.22 mg GAE g-1 51.0215.02 mg QE g-1 77.414.28 M TE g-1 and 2.560.44 M TE g-1 respectively.P. guajava leaf extract glazing was significantly (p0.05) effective in reducing the total bacteria accumulation in M. rosenbergii. Untreated M. rosenbergii reach the limit of acceptability on 7th day of chilled storage. Meanwhile the shelf-life of both samples coated with 0.5 and 1.0 were extended up to the 10th day of storage. TVBN value of treated samples showed a significantly (p0.05) lower amount compared to the untreated samples. With regard to safety of food consumption microbiology analysis are more reliable to reflect on the shelf life prediction of M. rosenbergii coated with P. guajava leaf extract.

Full text available from: Official URL: http://jssm.umt.edu.my/wp-content/uploads/sites/51...

Abstract

Guava Psidium guajava leaf extract was tested for antioxidant properties and activity; total phenolic content total flavonoid content (TFC) 2 2-diphenyl-1-picrylhydrazyl (DPPH) and ferric-reducing antioxidant power (FRAP). Giant freshwater prawns Macrobrachium rosenbergii were subjected to P. guajava leaf extract coating at concentrations of 0.5 and 1.0. Controls were left untreated. All samples were individually vacuum packed before chilled storage at 4C. Total bacteria count and total volatile basis nitrogen were analysed at five day interval during 15 days of chilled storage. The total phenolic content TFC DPPH and FRAP values were recorded at 383.6715.22 mg GAE g-1 51.0215.02 mg QE g-1 77.414.28 M TE g-1 and 2.560.44 M TE g-1 respectively.P. guajava leaf extract glazing was significantly (p0.05) effective in reducing the total bacteria accumulation in M. rosenbergii. Untreated M. rosenbergii reach the limit of acceptability on 7th day of chilled storage. Meanwhile the shelf-life of both samples coated with 0.5 and 1.0 were extended up to the 10th day of storage. TVBN value of treated samples showed a significantly (p0.05) lower amount compared to the untreated samples. With regard to safety of food consumption microbiology analysis are more reliable to reflect on the shelf life prediction of M. rosenbergii coated with P. guajava leaf extract.

[error in script]

Item Type:	Article
AGROVOC Term:	Macrobrachium rosenbergii
AGROVOC Term:	Freshwater prawns and shrimps
AGROVOC Term:	Psidium guajava
AGROVOC Term:	Guavas
AGROVOC Term:	Antioxidants
AGROVOC Term:	Leaves
AGROVOC Term:	Extracts
AGROVOC Term:	Plant extracts
AGROVOC Term:	Coating
AGROVOC Term:	Cold storage
Geographical Term:	Malaysia
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	28 Apr 2025 06:54
URI:	http://webagris.upm.edu.my/id/eprint/24171

Actions (login required)

View Item