Effect of Preservation on Two Different Varieties of Vernonia amygdalina Del. (Bitter) Leaves
 /  Effect of Preservation on Two Different Varieties of Vernonia amygdalina Del. (Bitter) Leaves

Effect of Preservation on Two Different Varieties of Vernonia amygdalina Del. (Bitter) Leaves

Nyerhovwo J. Tonukari 1,2* , Oghenetega J. Avwioroko 1,2 , Theresa Ezedom 1 ,
Akpovwehwee A. Anigboro 1
Abstract
Vernonia amygdalina Del. is one of the leafy vegetables that can be used in an attempt to alleviate
the problem of micronutrient malnutrition, prominent in tropical Africa. In order to ensure avail-
ability in non-growing areas or seasons, the vegetable needs to be preserved. Processing and pre-
servation methods influence the nutrient content of vegetables. The present study was aimed at
determining the effects of preservation on two different varieties of V. amygdalina (bitter) leaves
(broad and small leaves). To this effect, evaluations were made on the chlorophyll content, phyto-
chemicals, and antioxidant capacity of the two varieties of bitter leaf (V. amygdalina Del.) stored at
4 ̊C and −20 ̊C over a period of two weeks. Results showed a significant decrease in all parameters
studied for both varieties at −20 ̊C except for the free radical reducing power (FRAP), DPPH radi-
cal scavenging activity (%RSA) and nitric oxide radical scavenging activity (%RSA) of V. amygda-
lina broad leaves where increase in scavenging activity was observed. Thus, it was concluded that
to preserve the chlorophyll, phenol, total soluble proteins and reducing sugar levels, preservation
at 4 ̊C is recommended. The present study finding would be useful during short-term preservation
of bitter leaves for soup preparation and/or its aqueous extract for ethnomedicinal purposes, es-
pecially the small leaf variety.

Journal Article
PDF, 137.2 KB
Creative Commons LicenseCreative Commons license
Biological Sciences
Biochemistry
Vernonia amygdalina, Preservation, Refrigeration, Phytonutrients, Chlorophyll, Phenolic Compounds, Antioxidant Capacities
Christian Bassey
17th April, 2018
17th April, 2018
http://oer.mciu.edu.ng/wp-content/uploads/2015/04/61ANIGBORO.pdf


Staff Profile Download

MICHAEL AND CECILIA IBRU UNIVERSITY

Ibru Village
Agbarha – Otor
Ughelli North
Delta State
Nigeria

Admissions

CONNECT WITH US

Registry