scholarly journals Mechanical Properties of Surimi Gel Added with Olive Leaf Extract Powder

2019 ◽  
Vol 22 (2) ◽  
pp. 318-326
Author(s):  
Muh Ali Arsyad ◽  
Arham Rusli ◽  
Masahiro Ogawa
Keyword(s):  
Mechanical Properties ◽  
Leaf Extract ◽  
Dry Weight ◽  
Breaking Stress ◽  
Olive Leaf ◽  
Breaking Strain ◽  
Olive Leaf Extract ◽  
Surimi Gel ◽  
Important Quality

Mechanical property is important factors in determining quality of surimi-based products. Plant phenolic compound has been used to improve mechanical properties of surimi gel. The aim of this study was to determine the effects of addition of olive leaf extract powder (OLEP) on the mechanical properties of surimi gel. Addition of OLEP that contained polyphenol of 1.9 mg GAE/g dry weight to surimi increased breaking stress and breaking strain of surimi gel. The breaking stress and breaking strain of surimi gel increased with increasing OLEP concentration. The addition of 0.2% OLEP increased the breaking stress of surimi gel by 13% and the breaking strain by 27%. The addition of 0.5% OLEP resulted in a 1.2 times increase in the breaking stress and breaking strain of surimi gel. Increasing breaking stress and breaking strain of surimi gel with the addition of OLEP is caused by the integration of additional crosslinks into the protein networks via polyphenols or their derivatives. Although the addition of OLEP had a detrimental effect on whiteness of surimi gel, OLEP is still a useful functional ingredient for improving mechanical properties of surimi gel products in which the color is not an important quality.

Olive leaf extracts for shelf life extension of salmon burgers

2018 ◽  
Vol 25 (2) ◽  
pp. 91-100 ◽  
Author(s):  
Ibtihel Khemakhem ◽  
Ana Fuentes ◽  
María Jesús Lerma-García ◽  
Mohamed Ali Ayadi ◽  
Mohamed Bouaziz ◽  
...  
Keyword(s):  
Shelf Life ◽  
Leaf Extract ◽  
Life Extension ◽  
Total Volatile ◽  
Olive Leaf ◽  
Leaf Extracts ◽  
Life Study ◽  
Olive Leaf Extract ◽  
Fish Product

In this work, the effect of the addition of olive leaf extracts on the quality of vacuum-packed salmon burgers stored at 4 ℃ during 16 days has been studied. Olive leaf extract and its hydrolysate were initially characterized and then incorporated to salmon burgers. A shelf life study was conducted in three different batches (control, olive leaf extract, and hydrolyzed olive leaf extract burgers). Among the chemical indices determined, total volatile base nitrogen values were lower in hydrolyzed olive leaf extract and olive leaf extract burgers than in control samples. Lipid oxidation was lower in salmon burger with olive leaf extract. Salmon mince treated with hydrolyzed olive leaf extract showed lower microbial counts during the whole study, which extended the shelf life of the fish product. Therefore, the potential of olive leaf extracts to preserve salmon burgers during cold storage has been demonstrated.

Evaluating the effects of lactic acid bacteria and olive leaf extract on the quality of gluten-free bread

Gene Reports ◽  
2020 ◽  
Vol 21 ◽  
pp. 100771 ◽  
Author(s):  
Mozhdeh Fazel Tehrani Moghaddam ◽  
Hossein Jalali ◽  
Abdorreza Mohammadi Nafchi ◽  
Leila Nouri
Keyword(s):  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Leaf Extract ◽  
Gluten Free ◽  
Olive Leaf ◽  
Olive Leaf Extract

scholarly journals Olive leaf extract prevents obesity, cognitive decline, and depression and improves exercise capacity in mice

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Toshio Mikami ◽  
Jimmy Kim ◽  
Jonghyuk Park ◽  
Hyowon Lee ◽  
Pongson Yaicharoen ◽  
...  
Keyword(s):  
Cognitive Decline ◽  
Exercise Capacity ◽  
Endurance Exercise ◽  
Leaf Extract ◽  
Metabolic Diseases ◽  
Olive Leaf ◽  
Olive Leaf Extract ◽  
Hypoxic Conditions ◽  
G Protein Coupled ◽  
Antioxidant Effects

AbstractObesity is a risk factor for development of metabolic diseases and cognitive decline; therefore, obesity prevention is of paramount importance. Neuronal mitochondrial dysfunction induced by oxidative stress is an important mechanism underlying cognitive decline. Olive leaf extract contains large amounts of oleanolic acid, a transmembrane G protein-coupled receptor 5 (TGR5) agonist, and oleuropein, an antioxidant. Activation of TGR5 results in enhanced mitochondrial biogenesis, which suggests that olive leaf extract may help prevent cognitive decline through its mitochondrial and antioxidant effects. Therefore, we investigated olive leaf extract’s effects on obesity, cognitive decline, depression, and endurance exercise capacity in a mouse model. In physically inactive mice fed a high-fat diet, olive leaf extract administration suppressed increases in fat mass and body weight and prevented cognitive declines, specifically decreased working memory and depressive behaviors. Additionally, olive leaf extract increased endurance exercise capacity under atmospheric and hypoxic conditions. Our study suggests that these promising effects may be related to oleanolic acid’s improvement of mitochondrial function and oleuropein’s increase of antioxidant capacity.

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