UTILIZATION OF FOOD PROCESSING BYPRODUCTS AS A SOURCE OF BIOACTIVE SUBSTANCES
SHAIMAA AHMED ABDEL HAKEEM MOSTAFA;
Abstract
This investigation was carried out to study the utilization of food processing byproducts
as a source of bioactive components as anti-oxidants and anti-microbial
substances from the selected by-products organic and aqueous extracts of
pomegranate, four varieties of mango and peanut. The results showed the wide range
of total phenolic contents among all by-products ranged 71.06 to 124.18 mg/100g
while it was from 41.65 to 95.07 mg/100g in aqueous extracts. Pomegranate byproducts
contained the highest phenolic levels in both the organic and aqueous
extracts. As for organic extracts of mango seed pulp were identified twenty phenolic
compounds, vanillic acid, protocatechuic, 3- OH- tyrosol, ferulic acid, caffeine,
benzoic acid, mangefrein and chlorogenic acid are the broadcast phenolic compounds
in the four mango seed pulp and kernel varieties (Zebdeia, Suckkarri, Hindi, Taimor)
as for aqueous extracts, also it was identified twenty phenolic compounds.
Antioxidant capacity of organic and aqueous by-products of four varieties of mango
and one variety of peanut and pomegranate as assessed by four antioxidant assays:
DPPH, ABTS, FRAP and inhibition of bleaching β-carotene-Linoleic acid the results
revealed that organic extract systems are more anti-oxidants efficient than that
aqueous extracts, mango seed pulp for four varieties had the highest anti-oxidant
activity than that found for mango seed kernel in almost all varieties. Pomegranate
peel represents the highest anti-oxidant activity for either organic or aqueous extracts.
Peanut shell in both extracts represents the lowest values of the DPPH, ABTS, FRAP
and inhibition of bleaching β-carotene-Linoleic acid assays. The oxidative stability of
sunflower oil as control 0.01, 0.02, and 0.05 % of organic and aqueous extracts of
pomegranate, peanut, and four varieties zebdeia, Suckkari, Hindi and Taimor of
mango seed kernel and mango seed pulp using Rancimat method. The results
indicated that all concentrations of organic extracts for the selected by-products under
investigation gradually increased the induction period (time) of sunflower oil with
different levels of the anti-oxidants effectiveness. In antimicrobial assay the organic
extracts had shown better anti-microbial activity compared to aqueous extract.
Key words: Mango, pomegranate and peanut by-products, phenols, antioxidant
activity, High Performance Liquid Chromatography (HPLC
as a source of bioactive components as anti-oxidants and anti-microbial
substances from the selected by-products organic and aqueous extracts of
pomegranate, four varieties of mango and peanut. The results showed the wide range
of total phenolic contents among all by-products ranged 71.06 to 124.18 mg/100g
while it was from 41.65 to 95.07 mg/100g in aqueous extracts. Pomegranate byproducts
contained the highest phenolic levels in both the organic and aqueous
extracts. As for organic extracts of mango seed pulp were identified twenty phenolic
compounds, vanillic acid, protocatechuic, 3- OH- tyrosol, ferulic acid, caffeine,
benzoic acid, mangefrein and chlorogenic acid are the broadcast phenolic compounds
in the four mango seed pulp and kernel varieties (Zebdeia, Suckkarri, Hindi, Taimor)
as for aqueous extracts, also it was identified twenty phenolic compounds.
Antioxidant capacity of organic and aqueous by-products of four varieties of mango
and one variety of peanut and pomegranate as assessed by four antioxidant assays:
DPPH, ABTS, FRAP and inhibition of bleaching β-carotene-Linoleic acid the results
revealed that organic extract systems are more anti-oxidants efficient than that
aqueous extracts, mango seed pulp for four varieties had the highest anti-oxidant
activity than that found for mango seed kernel in almost all varieties. Pomegranate
peel represents the highest anti-oxidant activity for either organic or aqueous extracts.
Peanut shell in both extracts represents the lowest values of the DPPH, ABTS, FRAP
and inhibition of bleaching β-carotene-Linoleic acid assays. The oxidative stability of
sunflower oil as control 0.01, 0.02, and 0.05 % of organic and aqueous extracts of
pomegranate, peanut, and four varieties zebdeia, Suckkari, Hindi and Taimor of
mango seed kernel and mango seed pulp using Rancimat method. The results
indicated that all concentrations of organic extracts for the selected by-products under
investigation gradually increased the induction period (time) of sunflower oil with
different levels of the anti-oxidants effectiveness. In antimicrobial assay the organic
extracts had shown better anti-microbial activity compared to aqueous extract.
Key words: Mango, pomegranate and peanut by-products, phenols, antioxidant
activity, High Performance Liquid Chromatography (HPLC
Other data
| Title | UTILIZATION OF FOOD PROCESSING BYPRODUCTS AS A SOURCE OF BIOACTIVE SUBSTANCES | Other Titles | استخدام مخلفات مصانع الاغذيه كمصادر للمواد النشطه حيويا | Authors | SHAIMAA AHMED ABDEL HAKEEM MOSTAFA | Issue Date | 2014 |
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