Natural deep eutectic solvents (NADES) composed of choline chloride with maltose (CMA), glycerol (CGL), citric (CCA) and lactic acid (CLA) combined with microwave (MAE), ultrasound (UAE), homogenate (HAE) and high hydrostatic pressure (HHPAE)-assisted extraction methods were applied to recover and compare olive leaf phenolic compounds. The resultant extracts were evaluated for their total phenol content (TPC), phenolic profile and antioxidant activity and compared with those of water and ethanol:water 70% / extracts. HAE was proven to be the most efficient method for the recovery of olive leaf phenolic compounds. The highest TPC (55.12 ± 1.08 mg GAE/g d.w.) was found in CCA extracts after HAE at 60 °C and 12,000 rpm, and the maximum antioxidant activity (3.32 ± 0.39 g d.w./g DPPH) was found in CGL extracts after UAE at 60 °C for 30 min. The TPCs of ethanol extracts were found to be higher than those of NADES extracts in most cases. The predominant phenolic compounds in the extracts were oleuropein, hydrohytyrosol and rutin.
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http://dx.doi.org/10.3390/molecules28010353 | DOI Listing |
Cell Physiol Biochem
December 2024
Zoology Department, Faculty of Science (Boys), Al-Azhar University, Cairo 11884, Egypt.
Plant Dis
December 2024
Universidad Autónoma de Occidente, CIENCIAS NATURALES Y EXACTAS , Carret. Internacional y Boulevard Macario Gaxiola, S/N, Los Mochis, Los Mochis, Sinaloa, Mexico, 81200.
Castor bean (Ricinus communis) is cultivated agriculturally for oil and ornamentally for its bright foliage and seed. Ornamental castor bean has naturalized in many areas of the world, including the state of Sinaloa, Mexico, where it is not planted commercially. In a survey conducted in 2019 in Sinaloa, wild castor bean was found widely affected by a foliar blight with symptoms similar to Alternaria ricini previously described in the United States (Stevenson 1945) and in the state of Chiapas, Mexico (López-Guillén et al.
View Article and Find Full Text PDFPlant Dis
December 2024
College of Agriculture, Inner Mongolia Minzu University, Tongliao 028000, P. R. China;
Fangfeng (Saposhnikovia divaricata) is a perennial plant belonging to the Umbelliferae family, and is widely cultivated as a traditional Chinese medicine plant used to treat various diseases in northern China. In August 2022, a widespread leaf spot disease emerged on the Fangfeng leaves across a 2.5-acre farmland located in the Naiman District of Tongliao City, China ( 44°17' N; 121°29' E), where 5,000 acres of Fangfeng had been cultivated.
View Article and Find Full Text PDFCell Physiol Biochem
November 2024
Zoology Department, Faculty of Science, Al-Azhar University, Cairo 11884, Egypt.
Background/aims: Gestational Diabetes Mellitus (GDM), a prevalent complication in pregnancy, is characterized by the Diabetes Association as diabetes diagnosed in the second or third trimester, often remaining asymptomatic. This study investigates the intricate effects of Streptozotocin on pregnant rats, unraveling its impact on Gestational Type 2 Diabetes (GTD). The research delves into the potential therapeutic roles of mesenchymal stem cells (MSCs) and olive leaf extract (OLE) in mitigating the consequences of Streptozotocin-induced pancreatic impairment.
View Article and Find Full Text PDFBiomed Pharmacother
December 2024
Department of Pharmacy, School of Medicine, University of Naples Federico II, Naples, Italy. Electronic address:
Mast cell-mediated reactions promote various allergic disease, including anaphylaxis, allergic rhinitis, asthma, and atopic dermatitis. Different data demonstrated an intricate relationship between the use of antihistaminic drugs, the onset of side effects, and the development of resistance, underscoring the importance to find novel therapeutic approaches to treat allergic diseases. Olive leaf extract (OLE), is a by-product of the olive tree rich in bioactive compounds, known for its numerous therapeutic properties, including antioxidant, anti-tumoral and antidiabetic effects.
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