scholarly journals Antifungal activity of hydroxytyrosol enriched extracts from olive mill waste against Verticillium dahliae, the cause of Verticillium wilt of olive

2021 ◽  
Vol 60 (1) ◽  
pp. 139-147
Author(s):  
Mounira Inas DRAIS ◽  
Elisa PANNUCCI ◽  
Rocco CARACCIOLO ◽  
Roberta BERNINI ◽  
Annalisa ROMANI ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
Verticillium Wilt ◽  
Verticillium Dahliae ◽  
Effective Control ◽  
Mycelium Growth ◽  
Waste Products ◽  
Olive Mill Waste ◽  
Conidium Germination ◽  
Mill Waste ◽  
Olive Mill

Verticillium wilt (caused by Verticillium dahliae Kleb.) is an important disease affecting olive (Olea europaea L.) production. Effective control of this disease relies on integrated management strategies. In vitro antifungal activity of two hydroxytyrosol (HTyr) enriched extracts (HTE1 and HTE2) obtained from olive mill waste products (OMWP) was assessed against V. dahliae. Inhibitory effects of pure HTyr as a standard, and HTE1 and HTE2 at different concentrations, were evaluated on mycelium growth and conidium germination of V. dahliae. Chemical characterization of HTE1 and HTE2 allowed identification and quantification of HTyr as the main constituent in both extracts along with other low molecular weight phenols. HTE1 showed a higher inhibitory activity in both growth and conidium germination of V. dahliae. At the tested concentrations, low antifungal effects of HTyr were observed. After 3 d, 1 mg mL-1 of HTE1 gave greater inhibition of mycelium growth than HTE2 or HTyr. After 24 h, HTE1 gave 55% inhibition of conidium germination, and HTyr and HTE2 both gave 37% inhibition. This study has demonstrated that phenolic compounds derived from OMWP have antifungal activity against V. dahliae, indicating the potential of these compounds for eco-friendly control of Verticillium wilt.

scholarly journals Composted versus Raw Olive Mill Waste as Substrates for the Production of Medicinal Mushrooms: An Assessment of Selected Cultivation and Quality Parameters

2013 ◽  
Vol 2013 ◽  
pp. 1-13 ◽  
Author(s):  
Georgios I. Zervakis ◽  
Georgios Koutrotsios ◽  
Panagiotis Katsaris
Keyword(s):  
Wheat Straw ◽  
Agricultural Waste ◽  
Quality Parameters ◽  
Biological Efficiency ◽  
Total Phenolic ◽  
Mycelium Growth ◽  
Medicinal Mushrooms ◽  
Olive Mill Waste ◽  
Mill Waste ◽  
Olive Mill

Two-phase olive mill waste (TPOMW, “alperujo”) is a highly biotoxic sludge-like effluent of the olive-oil milling process with a huge seasonal production. One of the treatment approaches that has so far received little attention is the use of TPOMW as substrate for the cultivation of edible mushrooms. Fifteen fungal strains belonging to five species (Basidiomycota), that is,Agrocybe cylindracea,Pleurotus cystidiosus,P. eryngii,P. ostreatus, andP. pulmonarius, were evaluated for their efficacy to colonize media composed of TPOMW, which was used either raw or composted in mixtures with wheat straw in various ratios. Qualified strains exhibited high values of biological efficiency (e.g., 120–135% forPleurotusspp. and 125% forA. cylindracea) and productivity in subsequent cultivation experiments on substrates supplemented with 20–40% composted TPOMW or 20% raw TPOMW. Only when supplementation exceeded 60% for raw TPOMW, a negative impact was noted on mushroom yields which could be attributed to the effluent's toxicity (otherwise alleviated in the respective composted TPOMW medium). Earliness and mushroom size as well as quality parameters such as total phenolic content and antioxidant activity did not demonstrate significant differences versus the control wheat-straw substrate. The substrates hemicellulose content was negatively correlated with mycelium growth rates and yields and positively with earliness; in addition, cellulose: lignin ratio presented a positive correlation with mycelium growth and mushroom weight forA. cylindraceaand with earliness for all species examined. TPOMW-based media revealed a great potential for the substitution of traditional cultivation substrates by valorizing environmentally hazardous agricultural waste.

Isolation of a hydroxytyrosol lactone conjugate from olive mill waste water with antioxidant activity

Planta Medica ◽  
2014 ◽  
Vol 80 (16) ◽  
Author(s):  
K Vougogiannopoulou ◽  
H Pratsinis ◽  
R Grougnet ◽  
M Halabalaki ◽  
D Kletsas ◽  
...  
Keyword(s):  
Waste Water ◽  
Antioxidant Activity ◽  
Olive Mill Waste ◽  
Olive Mill Waste Water ◽  
Mill Waste ◽  
Olive Mill

OPTIMIZATION OF HEAVY POLLUTED SOIL FROM OLIVE MILL WASTE THROUGH THE IMPLEMENTATION OF ZEOLITES

2019 ◽  
Vol 18 (6) ◽  
pp. 1297-1309
Author(s):  
Antonis A. Zorpas ◽  
Maria K. Doula ◽  
Vassilis J. Inglezakis ◽  
Jose Pedreno Navvaro ◽  
Dimitrios J. Bilalis
Keyword(s):  
Polluted Soil ◽  
Olive Mill Waste ◽  
Mill Waste ◽  
Olive Mill

Changes in growth, yield and nutrient status of nine vegetables grown onto a soil substrate with two-phase olive mill waste sludge addition

2021 ◽  
pp. 1-17
Author(s):  
Anna Assimakopoulou ◽  
Ioannis Salmas ◽  
Aikaterina Tsikra ◽  
Alexandros-Iasonas Bastas ◽  
Maria Bakea ◽  
...  
Keyword(s):  
Growth Yield ◽  
Nutrient Status ◽  
Two Phase ◽  
Soil Substrate ◽  
Waste Sludge ◽  
Olive Mill Waste ◽  
Mill Waste ◽  
Olive Mill

Impact of oiled and de-oiled olive mill waste amendments on the sorption, leaching, and persistence ofS-metolachlor in a calcareous clay soil

2013 ◽  
Vol 48 (9) ◽  
pp. 767-775 ◽  
Author(s):  
David Peña ◽  
Ángel Albarrán ◽  
Antonio López-Piñeiro ◽  
José Manuel Rato-Nunes ◽  
Javier Sánchez-Llerena ◽  
...  
Keyword(s):  
Clay Soil ◽  
Olive Mill Waste ◽  
Sorption Leaching ◽  
Mill Waste ◽  
Olive Mill

Bioproduction of carotenoid compounds using two-phase olive mill waste as the substrate

2017 ◽  
Vol 54 ◽  
pp. 128-134 ◽  
Author(s):  
Virginia Borroni ◽  
Maria Teresa González ◽  
Amalia Antonia Carelli
Keyword(s):  
Two Phase ◽  
Olive Mill Waste ◽  
Mill Waste ◽  
Olive Mill
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