Effects of gamma irradiation on chemical composition and antioxidant potential of processed samples of the wild mushroom Macrolepiota procera

Abstract The aim of this study was to evaluate the compositional and nutritional potential of methanolic extracts of various parts of Acacia leucophloea Roxb. concerning the chemical composition and antioxidant potential of which limited information is available. Compositional studies indicated carbohydrates as major components in both seed and pods. Despite differences in mineral content among the leaves, pods and seeds, calcium was found in the highest amount and zinc in the lowest. The amino acid profile indicated aspartic acid as the major amino acid and proline as the minor. Among protein fractions, globulin was present in higher amounts than other fractions. Linoleic acid was the major fatty acid detected in the oil from both pods and seeds, while g-tocopherol was the major component of the tocopherol observed from same oil. Moreover, significant antioxidant potential was observed from the extracts of all three parts investigated. The results obtained in this study clearly indicate that A. leucophloea has a sufficient potential for use as a natural antioxidant agent. Further phytochemical studies will be performed for specification of the biologically active principles.

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Desamerization of Bitter Jam: Biochemical and Sensory Quality

Journal of Food Quality ◽

10.1155/2018/8178059 ◽

2018 ◽

Vol 2018 ◽

pp. 1-13

Author(s):

Samira Lagha-Benamrouche ◽

Terkia Benaissa ◽

Rezki Sadoudi

Keyword(s):

Chemical Composition ◽

Vitamin C ◽

Sensory Analysis ◽

Sensory Quality ◽

Bioactive Compound ◽

Antioxidant Potential ◽

Antioxidant Compounds ◽

Bitter Orange ◽

Sensorial Quality

This work consists of studying the influence of the desamerization of the mesocarpe on the chemical composition and the sensorial quality of the jam, based on the bitter orange. The results of the various analysis show that desamerization decreases acidity, sugars, protein, and bioactive compound levels (carotenoids, polyphenols, and vitamin C), but desamerized jams still remain an important source of antioxidant compounds with antioxidant potential in the diet. Concerning the sensory analysis of the jams, the results show that the jam desamerized with water presents the same bitterness as the bitter jam and that the salt significantly reduces the bitterness of the jams.

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Chemical Composition of Caneberry (Rubusspp.) Seeds and Oils and Their Antioxidant Potential

Journal of Agricultural and Food Chemistry ◽

10.1021/jf049149a ◽

2004 ◽

Vol 52 (26) ◽

pp. 7982-7987 ◽

Cited By ~ 97

Author(s):

B. Shaun Bushman ◽

Bliss Phillips ◽

Terry Isbell ◽

Boxin Ou ◽

Jimmie M. Crane ◽

...

Keyword(s):

Chemical Composition ◽

Antioxidant Potential

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Chemical Composition and Antioxidant Potential of Fruit Essential Oil of Laggera pterodonta (DC.) Benth Grown in North Central, Nigeria

Journal of Biologically Active Products from Nature ◽

10.1080/22311866.2020.1831957 ◽

2020 ◽

Vol 10 (5) ◽

pp. 405-410

Author(s):

L.A. Usman ◽

R.O. Ismaeel

Keyword(s):

Chemical Composition ◽

Essential Oil ◽

Antioxidant Potential ◽

North Central

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Chemical Composition, Antioxidant Potential and Enzymes Inhibitory Properties of Globe Artichoke By‐Products

Chemistry & Biodiversity ◽

10.1002/cbdv.202000073 ◽

2020 ◽

Author(s):

Ines Ben Rejeb ◽

Nahla Dhen ◽

Mohamed Gargouri ◽

Abdennacer Boulila

Keyword(s):

Chemical Composition ◽

Antioxidant Potential ◽

Globe Artichoke ◽

By Products

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A First Approach to the Chemical Composition and Antioxidant Potential of Guinea-Bissau Propolis

Natural Product Communications ◽

10.1177/1934578x19844138 ◽

2019 ◽

Vol 14 (5) ◽

pp. 1934578X1984413 ◽

Cited By ~ 1

Author(s):

Soraia I. Falcão ◽

Mélissa Lopes ◽

Miguel Vilas-Boas

Keyword(s):

Antioxidant Activity ◽

Chemical Composition ◽

Physicochemical Properties ◽

Natural Product ◽

Broad Spectrum ◽

Biological Activities ◽

Chemical Diversity ◽

Antioxidant Potential ◽

Phenolic Composition ◽

First Time

Propolis is a natural product derived from plant resins collected by honeybees and used in the beehive as a construction and defensive material. The broad spectrum of biological activities is dependent on the chemical diversity of its composition which is determined by the floral sources at the site of collection. For the first time, the chemical composition of Guinean propolis as well as its physicochemical properties, phenolic composition, and antioxidant activity was assessed. Eight compounds were identified through LC/DAD/ESI-MS n , mostly isoflavonoids, resembling Nigerian and Brazilian red propolis from the genus Dalbergia.

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Comparative Study of the Chemical Compositions and Antioxidant Activities of Fresh Juices from Romanian Cucurbitaceae Varieties

Molecules ◽

10.3390/molecules25225468 ◽

2020 ◽

Vol 25 (22) ◽

pp. 5468

Author(s):

Anna Cazanevscaia Busuioc ◽

Andreea-Veronica Dediu Botezatu ◽

Bianca Furdui ◽

Costel Vinatoru ◽

Filippo Maggi ◽

...

Keyword(s):

Antioxidant Activity ◽

Chemical Composition ◽

High Performance ◽

Antioxidant Activities ◽

Fruit Juices ◽

Antioxidant Potential ◽

Chemical Compositions ◽

Beneficial Effects ◽

Benincasa Hispida ◽

First Time

Cucurbitaceae is a family of health-promoting plants due to their compounds with beneficial effects. The aim of this study was to analyze, for the first time, the chemical composition, the antioxidant activity and the metal chelating properties of fruit juices obtained from four different species of the Cucurbitaceae family cultivated in Romania, namely Momordica charantia, Cucumis metuliferus, Benincasa hispida and Trichosanthes cucumerina. The samples of juice were analyzed by high-performance liquid chromatography (HPLC) and all the four species displayed high levels of the two triterpenes, oleanolic and ursolic acids, and also in phenolic compounds, including catechin, (−)-epicatechin and gallic acid. The juices demonstrated significant antioxidant activity against the free radical 2,2-diphenyl-1-picrylhydrazyl (ranging from 20 to 95%,), a good iron binding ability (ranging from 7.45 ± 0.28% to 86.95 ± 0.97%) and also promising antioxidant potential against the ABTS radical (ranging from 4.97 to 32.60 μETx/mL juice). Our findings raise interesting questions for further research on Cucurbitaceae fruit juices and, consequently, their very good antioxidant potential suggests these fruits should be further explored for their protective effect against oxidative damage. This is the first time the chemical composition and antioxidant activities of fruit juices from these four Romanian Cucurbitaceae varieties have been investigated.

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Effects of Gamma-Irradiation on the Antioxidant Potential of Traditional Bulgarian Teas

Natural Product Communications ◽

10.1177/1934578x1701200210 ◽

2017 ◽

Vol 12 (2) ◽

pp. 1934578X1701200

Author(s):

Michał Adam Janiak ◽

Adriana Slavova-Kazakova ◽

Magdalena Karamać ◽

Vessela Kancheva ◽

Anastasiya Terzieva ◽

...

Keyword(s):

Antioxidant Activity ◽

Gamma Irradiation ◽

Radical Scavenging Activity ◽

Radical Scavenging ◽

Biologically Active ◽

Food Irradiation ◽

Antioxidant Potential ◽

Total Phenolic ◽

Tannin Content ◽

Good Night

Food irradiation technologies are used to reduce the risk of food borne diseases by eliminating pathogenic microorganisms, prolonging shelf life and reducing storage losses by delaying ripening, germination or sprouting. However, application of irradiation in food technology can negatively influence the biologically active compounds in foods. In this research, the effect of gamma-irradiation on the antioxidant activity of Bulgarian teas was investigated. The aim of the study was to evaluate the total phenolic and tannin content and antioxidant activity of ethanolic extracts of Bulgarian herbal teas before and after gamma-irradiation. Mursalski tea ( Sideritis scardica), Mashterka tea ( Thymus serpyllum), Good Night tea (tea mix), Staroplaninski tea (Balkan tea mix), Trakia tea (tea mix), and Mountain tea (Planinski tea mix) were selected for this study. Gamma-irradiation was applied at the absorbed dose of 5 kGy. Antioxidant activity of non-irradiated and irradiated teas was determined by measuring antiradical activity against DPPH• and ABTS•+ and the ability to reduce ferrous ions. The highest total phenolic content was found in Mursalski tea (268 mg/g), and the highest tannin content in Good Night tea (168 mg/g). FRAP, TEAC and DPPH assays revealed that the most active samples were Staroplaninski (2.78 mmol Fe (II)/g), Planinski (0.87 mmol Trolox/g) and Planinski (0.032 mg/mL), respectively. The radical scavenging activity of irradiated tea samples was maintained after gamma-irradiation. The most interesting extract from irradiated tea studied was Staroplaninski, which demonstrated a higher antioxidant potential in the irradiated sample compared with the non-irradiated sample.

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