scholarly journals Effect of Chitosan Coating with Olive Leaf Extract on Shelf Life of Bighead Fish (Hypophthalmichthys nobilis) Chilled Fillet

2020 ◽  
Vol 14 (3) ◽  
pp. 111-118
Author(s):  
Hamed Kioumarsi ◽  
Atefeh Meherpour ◽  
Hamed Ghafouri-O ◽  
Negin Nasiri
Keyword(s):  
Shelf Life ◽  
Leaf Extract ◽  
Olive Leaf ◽  
Olive Leaf Extract ◽  
Chitosan Coating ◽  
Hypophthalmichthys Nobilis

Improving quality and shelf-life of minced beef using irradiated olive leaf extract

2018 ◽  
Vol 42 (11) ◽  
pp. e13789 ◽  
Author(s):  
Ali Ragab Shalaby ◽  
Mervat Mohamed Anwar ◽  
Essam Mohamed Sallam
Keyword(s):  
Shelf Life ◽  
Leaf Extract ◽  
Olive Leaf ◽  
Olive Leaf Extract ◽  
Minced Beef ◽  
Quality And Shelf Life

scholarly journals Physico-Chemical, Microbiological and Sensory Evaluation of Ready-to-Use Vegetable Pâté Added with Olive Leaf Extract

Foods ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 138 ◽  
Author(s):  
Graziana Difonzo ◽  
Giacomo Squeo ◽  
Maria Calasso ◽  
Antonella Pasqualone ◽  
Francesco Caponio
Keyword(s):  
Shelf Life ◽  
Leaf Extract ◽  
Antioxidant Properties ◽  
Butylated Hydroxytoluene ◽  
Life Extension ◽  
Olive Leaf ◽  
Olive Leaf Extract ◽  
Shelf Life Extension ◽  
Physico Chemical ◽  
Microbial Groups

The shelf-life extension implicates the reduction of food waste. Plant polyphenols can have a crucial role in the shelf-life extension of foods. Olive leaf extract (OLE) is rich in phenolic compounds such as oleuropein, which is well-known for its antioxidant properties. Physico-chemical, microbiological and sensory aspects of non-thermally stabilized olive-based pâté fortified with OLE at concentrations of 0.5 (EX0.5) and 1 mg kg−1 (EX1) were investigated. These samples were compared with olive-based pâté fortified with the synthetic antioxidant BHT (butylated hydroxytoluene) and with a control sample (CTR) without antioxidants. No sensory defects were perceived in all samples, even if a more intense typical olive flavour was perceived in samples containing OLE compared to those containing BHT and CTR. This result was confirmed by significantly higher levels of 2-methylbutanal and 3-methylbutanal in samples containing OLE compared to CTR and BHT. Moreover, the main microbial groups registered a significant loss of 0.5–1 logarithmic cycles in samples containing OLE, especially in EX1. The results of the present study indicate the potentiality of using OLE as natural preservatives in non-thermally stabilized olive-based pâté, since some spoilage-related microbial groups were negatively affected by the addition of OLE at the highest concentration.

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.

Modeling quality changes in tomato paste containing microencapsulated olive leaf extract by accelerated shelf life testing

2016 ◽  
Vol 97 ◽  
pp. 12-19 ◽  
Author(s):  
Mohammad Ganje ◽  
Seid Mahdi Jafari ◽  
Alinaghi Dusti ◽  
Danial Dehnad ◽  
Morad Amanjani ◽  
...  
Keyword(s):  
Shelf Life ◽  
Leaf Extract ◽  
Quality Changes ◽  
Life Testing ◽  
Olive Leaf ◽  
Olive Leaf Extract ◽  
Tomato Paste

scholarly journals Addition of Olive Leaf Extract (OLE) for Producing Fortified Fresh Pasteurized Milk with An Extended Shelf Life

Antioxidants ◽  
2019 ◽  
Vol 8 (8) ◽  
pp. 255 ◽  
Author(s):  
Palmeri ◽  
Parafati ◽  
Trippa ◽  
Siracusa ◽  
Arena ◽  
...  
Keyword(s):  
Shelf Life ◽  
Leaf Extract ◽  
Microbial Growth ◽  
In Vitro Assays ◽  
Undetectable Level ◽  
Expiration Date ◽  
Olive Leaf ◽  
Pasteurized Milk ◽  
Olive Leaf Extract

An olive leaf extract (OLE) has been tested in vitro for its antibacterial activity and ability to inhibit α-glucosidase enzyme. OLE was also evaluated for its potential, when added to pasteurized milk, to preserve nutritional parameters and to limit microbial growth, thus prolonging shelf life. In vitro assays demonstrated a strong antibacterial efficacy of OLE mainly against Bacillus cereus and the capacity to inhibit α-glucosidase enzyme (IC50) when used at 0.2 mg oleuropein/mL. The milk fortification with OLE at 3.6 mg of oleuropein/mL of milk reduced total mesophilic bacteria at undetectable level after 6 d (expiration date) and by 1 log CFU/mL after 10 d. Moreover, OLE addition at 1.44 and 3.6 mg of oleuropein/mL of milk significantly reduced fat and lactose losses up to 10 d. The results motivate the use of the OLE to make a new functional milk with an extended shelf life.

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.

scholarly journals Olive leaf extract impairs mitochondria by pro-oxidant activity in MDA-MB-231 and OVCAR-3 cancer cells

2021 ◽  
Vol 134 ◽  
pp. 111139
Author(s):  
Reyes Benot-Dominguez ◽  
Maria Grazia Tupone ◽  
Vanessa Castelli ◽  
Michele d’Angelo ◽  
Elisabetta Benedetti ◽  
...  
Keyword(s):  
Cancer Cells ◽  
Leaf Extract ◽  
Olive Leaf ◽  
Olive Leaf Extract
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