Irrigation with treated wastewater affected the minor components of virgin olive oil from cv. Chemlali in Tunisia

Bedbabis, Saida; Rouina, Béchir Ben; Mazzeo, Andrea; Ferrara, Giuseppe

doi:10.1007/s00217-017-2896-0

Cited by 6 publications

(7 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Irrigation is one of the main agronomic practices affecting squalene levels of olive oils [49]. Interestingly, squalene was significantly higher in plants irrigated with wastewater than good quality water [46], with values reaching those expected for good quality olive oil [50]. This effect has been linked with the higher lectrical conductivity of treated wastewater irrigation as it has been observed previously for tocopherols [51].…”

Section: Metabolomic Analysissupporting

confidence: 53%

“…This terpenoid has a well-known protective role against various oxidative stresses due to its chemo-protective role in skin cancer and aging [44]. Squalene is a precursor of sterols and is very important for virgin olive oil authentication [45], ranging between 800 to 900 and 6000 to 8000 mg kg −1 in different varieties [46][47][48]. Irrigation is one of the main agronomic practices affecting squalene levels of olive oils [49].…”

Section: Metabolomic Analysismentioning

confidence: 99%

See 1 more Smart Citation

Water Deficit Affects the Growth and Leaf Metabolite Composition of Young Loquat Plants

Gugliuzza

Talluto

Martinelli

et al. 2020

Plants

View full text Add to dashboard Cite

Water scarcity in the Mediterranean area is very common and understanding responses to drought is important for loquat management and production. The objective of this study was to evaluate the effect of drought on the growth and metabolism of loquat. Ninety two-year-old plants of ‘Marchetto’ loquat grafted on quince were grown in the greenhouse in 12-liter pots and three irrigation regimes were imposed starting on 11 May and lasting until 27 July, 2013. One-third of the plants was irrigated with 100% of the water consumed (well watered, WW), a second group of plants was irrigated with 66% of the water supplied to the WW plants (mild drought, MD), and a third group was irrigated with 33% of the water supplied to the WW plants (severe drought, SD). Minimum water potential levels of −2.0 MPa were recorded in SD plants at the end of May. Photosynthetic rates were reduced according to water supply (WW > MD > SD), especially during the morning hours. By the end of the trial, severe drought reduced all growth parameters and particularly leaf growth. Drought induced early accumulation of sorbitol in leaves, whereas other carbohydrates were not affected. Of over 100 leaf metabolites investigated, 9 (squalene, pelargonic acid, glucose-1-phosphate, palatinol, capric acid, aconitic acid, xylitol, lauric acid, and alanine) were found to be useful to discriminate between the three irrigation groups, suggesting their involvement in loquat metabolism under drought conditions. Loquat behaved as a moderately drought-tolerant species (limited stem water potential and growth reductions) and the accumulation of sorbitol in favor of sucrose in mildly-stressed plants may be considered an early protective mechanism against leaf dehydration and a potential biochemical marker for precise irrigation management.

show abstract

Section: Metabolomic Analysissupporting

confidence: 53%

Section: Metabolomic Analysismentioning

confidence: 99%

Water Deficit Affects the Growth and Leaf Metabolite Composition of Young Loquat Plants

Gugliuzza

Talluto

Martinelli

et al. 2020

Plants

View full text Add to dashboard Cite

show abstract

“…Conversely, the impact of crop irrigation by TWWs on nutritional and nutraceutical value is poorly described in the literature. In more detail, irrigation with TWWs of short‐term crops, such as strawberries, does not appear to promote significant variations of the principal nutritional and nutraceutical values, 13 whereas, for long‐term crops, such as olive trees, the effect of an extended TWW irrigation increased the level of β‐carotene and total tocopherols of olive oil 3 …”

Section: Introductionmentioning

confidence: 95%

“…On the other hand, limited FW availability is a problem of increasing concern in the world and FW resources are becoming insufficient for efficiently sustaining agricultural irrigation, mainly as a result of climate‐related conditions. Indeed, in most cases, water scarcity is a climate‐bound regional problem and affects many areas worldwide, not only including the Middle East and North Africa, 3 but also Southern Europe, including Italy 4 …”

Section: Introductionmentioning

confidence: 99%

Productivity and nutritional and nutraceutical value of strawberry fruits (Fragaria x ananassa Duch.) cultivated under irrigation with treated wastewaters

et al. 2020

View full text Add to dashboard Cite

BACKGROUNDAgriculture represents a productive sector typically characterized by a high water demand, whereas freshwater (FW) availability is a problem of increasing concern in the world and FW resources are becoming insufficient for sustaining agricultural irrigation. The reuse of treated wastewaters (TWWs) for crop irrigation could be an efficient tool for reducing water shortage. Hence, the present study evaluated the food quality of Fragaria x ananassa (cultivar Camarosa) fruits irrigated with four types of treated wastewaters (TWWs). Strawberries were analysed for yield, sucrose, fructose, glucose, total soluble polyphenols (TSP), total monomeric anthocyanins (TMA), and antiradical and antioxidant capacity. In addition, a targeted quantification of the most representative phenolic compounds of strawberry was performed.RESULTSTWWs complied the Italian ministerial decree 185/2003 for wastewater reuse, with very few exceptions, mainly represented by chloride concentrations (258–643 mg L–1 versus a legal threshold of 250 mg L–1). The reuse of TWWs reduced fruit yield (10–26%) compared to irrigation with tap water as a control. Irrigation with TWWs gave also rise to the decrease of total sugars (14–26%), TSP (2–10%) and TMA (29–49%). Individual phenolic acids, flavonols and flavanols were quite stable in response to the irrigation with TWWs, whereas anthocyanidins decreased significantly.CONCLUSIONAlthough TWWs negatively affected fruit quality, the nutritional and nutraceutical parameters determined in the present study were in line with data previously reported for strawberries purchased in the market or cultivated in research orchards, thus suggesting that the use of TWWs does not prevent the fruit marketability. © 2020 Society of Chemical Industry

show abstract

“…Virgin olive oil, as an expensive commodity, is one of the foods most prone to food fraud . Squalene content has been used to identify fraud regarding the type of olive oil, falsification of blended oils marketed as olive oil, and even to determine geographical origin by using its content or combined with other chemical compounds . Unfortunately, no recommended analytical method exists to assess this compound .…”

Section: Introductionmentioning

confidence: 99%

Could squalene be an added value to use olive by‐products?

et al. 2019

View full text Add to dashboard Cite

Squalene (SQ) is an intermediate hydrocarbon in the biosynthesis of phytosterols and terpenes in plants.It is widely used for applications such as skin moisturizers, vaccines, or in carriers for active lipophilic molecules. It has commonly been obtained from sharks, but restrictions on their use have created a need to find alternative sources. We present a review of studies concerning SQ in olive groves to characterize its content and to provide new aspects that may increase the circular economy of the olive tree. There is a large variation in SQ content in virgin olive oil due to cultivars and agronomic issues such as region, climate, types of soil, crop practices, and harvest date. Cultivars with the highest SQ content in their virgin olive oil were 'Nocellara de Belice', 'Drobnica', 'Souri', and 'Oblica'. An interaction between cultivar and aspects such as irrigation practices or agricultural season is frequently observed. Likewise, the production of high SQ content needs precise control of fruit maturation. Leaves represent an interesting source, if its extraction and yield compensate for the expenses of their disposal. Supercritical carbon dioxide extraction from olive oil deodorizer distillates offers an opportunity to obtain high-purity SQ from this derivative. Exploiting SQ obtained from olive groves for the pharmaceutical or cosmetic industries poses new challenges and opportunities to add value and recycle by-products.

show abstract

Irrigation with treated wastewater affected the minor components of virgin olive oil from cv. Chemlali in Tunisia

Cited by 6 publications

References 46 publications

Water Deficit Affects the Growth and Leaf Metabolite Composition of Young Loquat Plants

Water Deficit Affects the Growth and Leaf Metabolite Composition of Young Loquat Plants

Productivity and nutritional and nutraceutical value of strawberry fruits (Fragaria x ananassa Duch.) cultivated under irrigation with treated wastewaters

Could squalene be an added value to use olive by‐products?

Contact Info

Product

Resources

About