Drupe Characters, Fatty Acids, Polyphenolic and Aromatic Profile of Olive Oil Obtained from “Oliva Bianca”, Minor Autochthonous Cultivar of Campania

Campania, due to its pedo-climatic conditions and to its large varietal heritage, is able to produce oils with high typicity, each different from the other. In this study a “minor” autochthonous cultivar of Campania “Oliva Bianca” was analyzed. In autumn 2020, on drupes from trees belonging to the Campania germplasm collection a varietal characterization through physical, chemical and chromatic parameters at the harvest was carried out. Phenolic compounds profile, fatty acids composition and volatile organic compounds have been investigated in the resulting oil. Quality indices, organoleptic and sensory qualities (panel test) were also determined on the oil. Drupe weight was 4.31 g, flesh/pit ratio was 3.68 and the accumulation of oil content at harvest in drupes was 18.63% FW. The drupes showed high anthocyanins content equal to 116.10 mg/kg. In the oil studied, the secoiridoids represented the 82.25% of total phenolic compounds, the concentration of oleic acid was 74.82% and the most present volatile compound was trans-2-hexenal (72.30%). High secoiridoid derivatives concentrations such as oleuropein (85.93 mg/kg) and ligstroside (122.43 mg/kg) aglycones were showed. This study showed a good content of qualitative and quantitative parameters of “Oliva Bianca” oil and drupe, that can have important beneficial effects on human health.

Benefits of Phenolic Compounds Isolated from Olive Oil on Prevention of Cancer

Traditional Mediterranean Diet has been long known to have many health benefits. The diet is associated by the low percentage of certain types of cancers such as colorectal cancer, breast cancer, gastric cancer and prostate cancer. The main source of fats in the Mediterranean diet is olive oil. In fact, the beneficial health effects of olive oil were attributed to its phenolic compounds like phenolic alcohols, hydroxytyrosol (3,4-dihydroxyphenylethanol) and their secoiridoid derivatives (oleocanthal). Several studies have demonstrated that hydroxytyrosol and oleocanthal are able to inhibit proliferation and induce apoptosis in different tumor cell lines. The aim of this review was to give an overview of the effect of hydroxytyrosol and –oleocanthal on different types of cancer.

Eleven Monovarietal Extra Virgin Olive Oils from Olives Grown and Processed under the Same Conditions: Effect of the Cultivar on the Chemical Composition and Sensory Traits

Eleven Italian monovarietal extra virgin olive oils (MEVOOs) (Carboncella, Coratina, Frantoio, Leccino, Marzio, Maurino, Moraiolo, Piantone di Falerone, Pendolino, Rosciola, Sargano di Fermo) from olives grown in the same experimental olive orchard, under the same conditions (fertilization, irrigation), and processed with the same technology (three-way continuous plant) were investigated. As a result, the impact of the olive cultivar on fatty acid and triacylglycerols composition, oxidative stability, polar phenolic profile and sensory properties (panel test) of the oil was assessed. Pendolino, Maurino and Marzio oils presented the highest levels (p < 0.01) of palmitic, linoleic and linolenic acids % and the lowest oleic:linoleic ratio. Within triacylglycerols, triolein (OOO) strongly varied among the oils, with Coratina and Leccino having the highest content. Frantoio showed the lowest 1-Stearoyl-2-palmitoyl-3-oleylglycerol and 1,3-Distearoyl-2-oleylglycerol amounts. Rosciola showed the highest level (p < 0.01) for two of the most abundant secoiridoid derivatives (the dialdehydic forms of decarboxymethyl elenolic acid linked to hydroxytyrosol and tyrosol). A good correlation was found between total phenolic content and oxidative stability, indicating Marzio and Leccino respectively as the richest and poorest genotypes. Sensory variability among varieties was mainly linked to perceived bitterness, pungency and fruitiness, while no effects were found on secondary flavors.

Anti-cancer properties of olive oil secoiridoid phenols: a systematic review of in vivo studies

Olive oil phenolic alcohols and their secoiridoid derivatives may prevent cancer.

One New Conjugate of a Secoiridoid Glucoside with a Sesquiterpene Glucoside from the Flower Buds of Lonicera japonica

Secosesquside (1), a new secoiridoid glucoside-sesquiterpene conjugate, together with three known secoiridoid derivatives, were isolated from flower buds of Lonicera japonica. The isolated compounds were elucidated by extensive spectroscopic analyses, especially 2D NMR experiments. The anti-inflammatory activities of the new compound were also evaluated by enzyme-linked immunosorbent assay.