Variation in biochemical profile and health beneficial compounds and biological activities of Brassica oleracea var gongylodes L. morphological parts

Brassica oleracea var. gongylodes , commonly used as food, is loaded with biochemicals that fend diabetes, cancer, high cholesterol and it improves the general human health. The present study aimed at evaluating the antioxidant and antibacterial activities of leaves, flesh and peel extracts of B. ol...

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Bibliographic Details
Published in:Journal of food measurement & characterization 2020-06, Vol.14 (3), p.1192-1200
Main Authors: Ben Sassi, Ahlem, Cheikh M’hamed, Amina, Chahdoura, Hassiba, Saidani Tounsi, Moufida, Mastouri, Maha, Ben Salem, Hichem
Format: Article
Language:English
Subjects:
Antibacterial activity
Antioxidants
Ascorbic acid
Biochemistry
Brassica
Brassica oleracea
Catechol
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Chlorogenic acid
Chlorophyll
Cholesterol
Chromatography
Composition
Diabetes mellitus
Dilution
Engineering
Epicatechin
Fatty acids
Flame ionization detectors
Food Science
Functional foods & nutraceuticals
Gallic acid
Gas chromatography
Hemicellulose
High performance liquid chromatography
Ionization
Leaves
Liquid chromatography
Minimum inhibitory concentration
Original Paper
Oxidative stress
Phenolic compounds
Phenols
Plant extracts
Sucrose
Sugar
Trace elements
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Summary:Brassica oleracea var. gongylodes , commonly used as food, is loaded with biochemicals that fend diabetes, cancer, high cholesterol and it improves the general human health. The present study aimed at evaluating the antioxidant and antibacterial activities of leaves, flesh and peel extracts of B. oleracea var. gongylodes cultivated in Tunisia. Besides, biochemical, phenolic and nutritional composition was investigated. Phenolics and ascorbic acid were detected and quantified by high performance liquid chromatography (HPLC) method, while fatty acids and sugars were identified by gas chromatography flame ionization detector (GC-FID). Nutritional composition was determined for each plant part. Antioxidant activities were estimated by DPPH, ABTS and reducing power assays. Agar disk diffusion and micro-dilution methods were adopted to determine antibacterial activity. Leaves showed significantly high antiradical (EC 50  = 0.26–0.32 mg/mL), antioxidant (EC 50  = 0.46 mg/mL) and antibacterial (MIC = 0.625 mg/mL) activities. Chlorogenic acid, catechol, epigallocatechin and epicatechin 3- O -gallate were present in leaves. Isorhamnetin-3- O -glucoside was detected in peel and flesh. Gallic acid was present only in flesh. Peel showed higher ascorbic acid content (223.2 mg/100 g DW) than flesh and leaves. Hemicellulose, chlorophylls, proteins, Na, P and microelements amounts were significantly elevated in leaves. Sucrose is the main sugar in stem tissues. Linoleic, palmitic and oleic acids were the major fatty acids in this species. The present study provides important data on phytochemical, nutritional composition, bioactivities and emphasizes B. oleracea var. gongylodes as a potential nutraceutical and functional food. Moreover, this species can be employed as an alternative and complementary therapy for the running of related diseases of oxidative stress.
ISSN:2193-4126
2193-4134
DOI:10.1007/s11694-019-00368-1