Effect of UV-C on the physiology and biochemical profile of fresh Piper nigrum berries

Abstract

HighlightsUV-C caused significant changes in colour (from green to brown).A low UV-C dose significantly increased piperine and essential oil content.A newly developed simultaneous extraction method is discussed.

New insights into the effects of ethylene on ABA catabolism, sweetening and dormancy in stored potato tubers

“…After 1-MCP treatment, tubers were ventilated for 24 h and then transferred to Cranfield University (Bedfordshire, UK) within 2 h whereupon they were promptly sorted across treatments and stored in gas-tight boxes (100 L, water-sealed) inside variable temperature rooms. The boxes were continuously flushed (5 L min −1 ) with air (Control, -C) or ethylene (-E), 10 μL L −1 , as previously described ( Amoah et al, 2017 ; Collings et al, 2018 ).…”

Fructans redistribution prior to sprouting in stored onion bulbs is a potential marker for dormancy break

“…Each replicate was then placed in a 3 L sealed gas jar with gas inlet for air supply and outlet for respiration rate measurement as CO 2 production. The measured CO 2 produced (in mL h −1 ) was adjusted to get the final respiration rate values as CO 2 produced in milligrams per kilogram of bulb weight per hour (mg kg −1 h −1 ) as previously described by Collings et al (2018).…”

Spatial changes in leaf biochemical profile of two tea cultivars following cold storage under two different vapour pressure deficit (VPD) conditions

“…Ethylene production was analysed using an ETD-300 Ethylene Detector with a CAT-1 catalyser and VC-1 valve control box (Sensor Sense, Netherlands). Samples (n = 9 and 18 shoots for Clone 2 and Yabukita, respectively) were placed into cuvettes (250 mL) which had a continuous flow (4 L h −1 ) of hydrocarbon free air flushing through (Collings, Gavidia, Cools, Redfern, & Terry, 2018). A stable baseline measurement, obtained using an empty cuvette, was recorded at the beginning and end of each run to allow values to be adjusted by removing the baseline.…”

“…Objective colour (lightness (L*), chroma (C*) and hue angle (h°) were measured using a Minolta CR-400 colourimeter with an 8 mm light aperture and DP-400 data processor (Minolta Co. Ltd., Japan) (Collings et al, 2018). The mean was calculated based on three readings measured from the largest leaf.…”