2,6-Diclhloroplleniolinidoplheol (D LP1P) is one of tlle mainy comnmloiinly) used electroni acceptors for the light-induced reactions in chloroplasts (2). Until recently, it has generally been assumed that it accepts electrons from the short-wavelengtlh pigment system 2 (PS2). Since the finding that indophenol reduction can be coupled with phlotophosphorylation [see review by Vernon and Avron (...

2,6-Diclhloroplleniolinidoplheol (D LP1P) is one of tlle mainy comnmloiinly) used electroni acceptors for the light-induced reactions in chloroplasts (2). Until recently, it has generally been assumed that it accepts electrons from the short-wavelengtlh pigment system 2 (PS2). Since the finding that indophenol reduction can be coupled with phlotophosphorylation [see review by Vernon and Avron (...

2,6-Diclhloroplleniolinidoplheol (D LP1P) is one of tlle mainy comnmloiinly) used electroni acceptors for the light-induced reactions in chloroplasts (2). Until recently, it has generally been assumed that it accepts electrons from the short-wavelengtlh pigment system 2 (PS2). Since the finding that indophenol reduction can be coupled with phlotophosphorylation [see review by Vernon and Avron (...

Two main methods are in current use for the estimation of dehydroascorbic acid. In the one, developed by Roe and his colleagues (Roe & Kuether, 1943; Roe, Mills, Oesterling & Damron, 1948), the dehydroascorbic acid is condensed with 2:4-dinitrophenylhydrazine and the product treated with sulphuric acid to give a red colour, the intensity of which is measured photoelectrically. In a second techn...

Light activation of NADP-linked glyceraldehyde-3-P dehydrogenase (EC 1.2.1.13) and light inactivation of glucose-6-P dehydrogenase (EC 1.1.1.49) appear to be modulated within pea leaf chloroplasts by mediators which are reduced by photosynthetic electron flow from the photosystem I reaction center. Dichlorophenyl-1, 1-dimethylurea inhibition of this modulation can be completely reversed by asco...

Methods based on the ability of ascorbic acid to reduce the dye 2:6-dichlorophenolindophenol (indophenol) to a colourless compound (Tillmans, Hirsch & Reinshagen, 1928) have been widely used in the estimation of ascorbic acid. Many other substances, including thiol compounds, thiosulphates, hydrogen sulphide, polyphenols and reductones (Lugg, 1942; Harris & Mapson, 1947) also decolorize indophe...

First, an effective pre-concentration of penicillamine was done via Fe3O4NPS. Then, a simple, rapid and sensitive spectrophotometric method is described for the determination of penicillamine by 2, 6-dichlorophenolindophenol (2, 6-DCPIP), as the chromogenic agent in bulk drug and formulations. It produces a bluish green coloured compound with maximum absorbance 610 nm. Bee...

First, an effective pre-concentration of penicillamine was done via Fe3O4NPS. Then, a simple, rapid and sensitive spectrophotometric method is described for the determination of penicillamine by 2, 6-dichlorophenolindophenol (2, 6-DCPIP), as the chromogenic agent in bulk drug and formulations. It produces a bluish green coloured compound with maximum absorbance 610 nm. Bee...