scholarly journals Pink and white shrimps from the Brazilian coast: pigment identification, antioxidant activity and microbial quality under different freezing-times

2020 ◽  
Author(s):  
Ana Maria Queijeiro LÓPEZ ◽  
Flávia Adaís Rocha dos SANTOS ◽  
Everton Santos MARTINS ◽  
Amanda Lys dos Santos SILVA ◽  
Elane Cristina Lourenço dos SANTOS
Keyword(s):  
Antioxidant Activity ◽  
Brazilian Coast ◽  
Microbial Quality ◽  
Pigment Identification

scholarly journals ANTIOXIDANT ACTIVITY, AMINO ACID PROFILE AND MICROBIAL QUALITY OF BEBONTOT, A BALINESE TRADITIONAL FERMENTED CHICKEN MEAT PRODUCTS

2019 ◽  
Vol 22 (3) ◽  
pp. 93
Author(s):  
Okarini I. A. ◽  
H. Purnomo ◽  
Aulanni'am . ◽  
L. E. Radiati
Keyword(s):  
Antioxidant Activity ◽  
Amino Acid ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Meat Products ◽  
Chicken Meat ◽  
Plate Count ◽  
Total Phenolic ◽  
Microbial Quality

Antioxidant activity, amino acids profile and microbial quality of raw bebontot of chicken meat of spent laying henwere investigated. The samples were prepared using meat dices (1.5 x 2.0 cm) mixed with fresh ground coriander,garlic, galangal, white pepper, salt, sugar and coconut oil then wrapped in Areca catechu palm dried sheaths andfinally fermented spontaneously by drying under the sun for 5 days. The results showed there was a decreasing inpH value, moisture content and 1,1-diphenyl-2-picrylhydrazyl radical scavenging activity of final products, whileits total phenolic content was increasing. Glutamic acid was the most abundant amino acid in products after 5days fementation, followed by tyrosine, aspartic acid, lysine, leucine and histidine. The total plate count and lacticacid bacteria counts were decreasing to 9.39 log cfu/g and 8.98 log cfu/g; the Micrococcaceae was decreased to5.31 log cfu/g; the yeast and moulds counts were increased to 8.58 log cfu/g and 6.51 log cfu/g at the final stageof fermentation. It can be concluded that bebontot chicken meat in this study is a good source of natural phenolicantioxidant, and the present microorganisms will provide the source for the selection of strains well adapted to theenvironment and able to compete with contaminant bacteria.

Improvement of cytoprotective and antioxidant activity of Rosa canina L. and Salix alba L. by controlled differential sieving process against H2O2-induced oxidative stress in mouse primary splenocytes

2017 ◽  
Vol 87 (3-4) ◽  
pp. 191-200 ◽  
Author(s):  
Nidhal Soualeh ◽  
Aliçia Stiévenard ◽  
Elie Baudelaire ◽  
Rachid Soulimani ◽  
Jaouad Bouayed
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Activities ◽  
Biological Activities ◽  
Good Alternative ◽  
Activity Levels ◽  
Salix Alba ◽  
Rosa Canina ◽  
Free Process ◽  
Plant Powders ◽  
Sieving Process

Abstract. In this study, cytoprotective and antioxidant activities of Rosa canina (RC) and Salix alba (SA), medicinal plants, were studied on mouse primary splenocytes by comparing Controlled Differential Sieving process (CDSp), which is a novel green solvent-free process, versus a conventional technique, employing hydroethanolic extraction (HEE). Thus, preventive antioxidant activity of three plant powders of homogeneous particle sizes, 50–100 µm, 100–180 µm and 180–315 µm, dissolved directly in the cellular buffer, were compared to those of hydroethanolic (HE) extract, at 2 concentrations (250 and 500 µg/mL) in H2O2-treated spleen cells. Overall, compared to HE extract, the superfine powders, i. e., fractions < 180 µm, at the lowest concentration, resulted in greater reactive oxygen species (ROS) elimination, increased glutathione peroxidase (GPx) activity and lower malondialdehyde (MDA) production. Better antioxidant and preventive effects in pre-treated cells were found with the superfine powders for SA (i. e., 50–100 µm and 100–180 µm, both p < 0.001), and with the intermediate powder for RC (i. e., 100–180 µm, p < 0.05) versus HE extract. The activity levels of catalase (CAT) and superoxide dismutase (SOD) in pretreated splenocytes exposed to H2O2, albeit reduced, were near to those in unexposed cells, suggesting that pretreatment with the fine powders has relatively restored the normal levels of antioxidant-related enzymes. These findings supported that CDSp improved the biological activities of plants, avoiding the use of organic solvents and thus it could be a good alternative to conventional extraction techniques.

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