V4-1115 — Final report
1.
Phenolic content of strawberry spreads during processing and storage

During storage, the phenolics were modified. The best phenolic retention was observed in spreads stored at 4 °C. Therefore, the proposed storage process (use of a cold chain) indicates good retention of phenolics in strawberry spreads, which maintain high nutritional and sensorial quality.

COBISS.SI-ID: 4287864
2.
Influence of cultivar and storage of chicory (Cichorium intybus L.) plants on polyphenol composition and antioxidative potential

We determine the total polyphenol content (TPC) and antioxidative potential (AOP) in external and internal leaves of different cultivars of chicory, both before and after storage. We analysed the red cultivars Leonardo, Trevisio, Mesola, Verona, and Chioggia, the red­spotted cultivar Castelfranco, and the sweet cultivars Jupiter, Uranus, and Mercurius. The chicories were stored at temperatures from 0.1°C to 0.8° C and relative humidity from 90% to 95%. Cultivar and leaves significantly influenced TPC and AOP, while storage influenced AOP only. The outer leaves showed significantly higher TPC and AOP. The TPC in chicory ranged from 20 mg/100 g to 400 mg/100 g fresh weight and the AOP ranged from 0.20 μmol/g to 0.85 μmol/g fresh weight

COBISS.SI-ID: 4363896
3.
Effect of trehalose addition on volatiles responsible for strawberry aroma

Addition of trehalose to different products influence the retention of aroma compounds. Trehalose thus retent some aroma compounds and consequently impact the overall olfactory impression of product.

COBISS.SI-ID: 4353912
4.
Effect of location in the canopy on the colour development of three apple cultivars during growth

Homogeneity in appearance is one of the quality aspects asked for in the supply chain. Decreasing the biological variation in batches of harvested apples (cultivars Braeburn, Fuji and Gala) becomes increasingly important. Skin colour is one of the aspects that determine both optimal harvest and stage of development. Skin colour is affected by location in the canopy. The red-coloured apple cultivar (Gala) depends more on the location in the canopy than the less-coloured cultivars (Fuji and Braeburn). The colour development in Fuji apples is considerably slower, with a much larger variation in stage of development. The location in the canopy affects all aspects of biological variation (biological shift factor and asymptotic starting level of colouration) for all three colour aspects L*, a* and b*, but only the mean value, not the standard deviation. The biological shift factors per colour aspects are linearly related. Once induced, variation remains constant during development.

COBISS.SI-ID: 4057208
5.
Real-time positioning algorithm for variable-geometry air-assisted orchard sprayer

An algorithm for positioning of spraying arms based on laser scanner measurements for variable-geometry air-assisted orchard sprayer was proposed. Functioning of the algorithm was presented for a real sprayer intended for experimental spraying in orchards, which had three hydraulically movable spraying arms that cover one side of the tree.

COBISS.SI-ID: 4301928