Elderberry is a known medicinal plant, in recent years it has been cultivated as fruit crop, valuable source of anthocyanins – red pigments, mainly used for processing. With HPLC/MS we detected anthocyanins cyanidin-3-sambubioside-5-glucoside, cyanidin-3,5-diglucoside, cyanidin-3-sambubioside, cyanidin-3-glucoside and cyanidin-3-rutinoside. The highest total anthocyanin content was 1265 mg/100 g FW fruit. From the quercetin glucosides group we identified quercetin-3-rutinoside and quercetin-3-glucoside (in total 73,4 mg/100 g FW). Elderberry fruit is also rich in organic acids (6,38 g/kg FW).
COBISS.SI-ID: 5697913
During 4 plum cultivars ripening we monitored color (colorimetrically) and anthocyanin content (HPLC/MS) in fruit skin. Correlation between color parameters L*, a* and b* and anthocyanin content was different for cultivars and ripening stage. Major anthocyanin was cyanidin-3-rutinoside (4,1 – 23,4 mg/100 g FW, from 52,6% to 73,0% total anthocyanins - TA), followed by peonidin-3-rutinoside (from 6,5% to 37,9% TA), cyanidin-3-glucoside (from 1,8% to 18,4% TA), cyanidin-3-xyloside (from 4,7% to 7,8% TA) and peonidin-3-glucoside (from 0.0 % to 0,4% TA).
COBISS.SI-ID: 5838201
We monitored the impact of entomopathogenic nematodae (Steinernema feltiae, Steinernema carpocapsae, Heterorhabditis bacteriophora) on larvae of Adalia bipunctata and Chrysoperla carnea. Experiment was conducted in lab at 3 temperatures (15, 20 and 25 o C) and 3 concentrations of nematodae suspensions. Larvae of Adalia bipunctata were more prone to attack of nematodae than larvae of Chrysoperla carnea. Lower mortality of all larvae after 4 days was detected at 15 o C, however no statistically significant differences were observed at other temperatures and concentrations of nematodae.
COBISS.SI-ID: 6045305
In developing rose flower ‘KORcrisett’ concentration of anthocyanins, quercetins, catechin and phenolic acids by the use of HPLC/MS was monitored. Development of color was measured colorimetrically. Buds and closed rose flowers contained up to threefold levels of pelargonidin-3,5-diglucoside and fourfold levels of cyanidin-3,5-diglucoside compared to senescent flower. Additionally, buds contained higher levels of quercetins, catechin and phenolic acids. A tight correlation was calculated between colorimetrically obtained parameters a*, b*, a*/b*, h°, L* and major/total anthocyanins.
COBISS.SI-ID: 6175353
Content of phenolics in healthy and apple scab infected leaf and fruit tissue was monitored by HPLC/MS. Leaf samples were collected from May to September, and fruit samples at technological maturity. Infection with fungus increased the content of phenolics mostly in the border tissue between the infected and healthy tissue. Tissue infected with fungus Venturia inaequalis contained as much as 7,6 times more hydroxycinnamic acids, up to 2,6 more flavan-3-ols and up to 2,9 more flavanols. Total phenolic content was up to 2,4 times higher in infected tissue compared to healthy leaves and fruit.
COBISS.SI-ID: 6083961