Impact of UV-B irradiation on chlorophyll degradation and chlorophyll-degrading enzyme activities in stored broccoli (Brassica oleracea L. Italica Group) florets

Colorless Chlorophyll Catabolites in Senescent Florets of Broccoli (Brassica oleracea var. italica)

Typical postharvest storage of broccoli (Brassica oleracea var. italica) causes degreening of this common vegetable with visible loss of chlorophyll (Chl). As shown here, colorless Chl-catabolites are generated. In fresh extracts of degreening florets of broccoli, three colorless tetrapyrrolic Chl-catabolites accumulated and were detected by high performance liquid chromatography (HPLC): two "n...

Effect of UV-C treatment on chlorophyll degradation, antioxidant enzyme activities and senescence in Chinese kale (Brassica oleracea var. alboglabra)

The changes in chlorophyll content, antioxidant enzyme activities and senescence in Chinese kale (Brassica oleracea var. alboglaba) irradiated with different UV-C dosages (1.8, 3.6, 5.4 and 7.2 kJ m-2) were determined during storage at 20°C. The irradiation dose of 3.6 and 5.4 kJ m-2 delayed leaf yellowing depicted as higher hue values and chlorophyll contents and lower activity of chlorophylla...

Effect of hydrothermal treatment on the antioxidant properties of broccoli (Brassica oleracea var. botrytis italica) florets.

In the extracts of fresh raw and frozen broccoli, caffeic, ferulic, sinapinic acids and kaempferol were identified. Boiling reduced the amounts of caffeic acid and kaempferol in both samples. The concentration of polyphenols was 2.69mg/g fresh mass and 0.96mg/fresh mass in fresh raw broccoli and frozen raw broccoli, respectively. Boiling significantly decreased the amounts of phenolic compounds...

Involvement of chloroplast peroxidase on chlorophyll degradation in postharvest broccoli 1 florets and its control

Chromosome Doubling of Microspore-Derived Plants from Cabbage (Brassica oleracea var. capitata L.) and Broccoli (Brassica oleracea var. italica L.)

Chromosome doubling of microspore-derived plants is an important factor in the practical application of microspore culture technology because breeding programs require a large number of genetically stable, homozygous doubled haploid plants with a high level of fertility. In the present paper, 29 populations of microspore-derived plantlets from cabbage (Brassica oleracea var. capitata) and brocc...