1983
DOI: 10.1080/00021369.1983.10865717
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Biochemical Changes in Secondary Metabolites in Wounded and Deteriorated Cassava Roots

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Cited by 24 publications
(11 citation statements)
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“…The preliminary analysis by HPLC shows that in vitro quillay ethanolic extracts contain a series of secondary metabolites (Table 1), which have been reported as antifungal compounds on phytopathogenic fungi, such as saponins (Oleszek et al 1990;Osbourn et al 1996;Apablaza et al 2002;Chapagain et al 2007), and the phenolic compounds chlorogenic, caffeic, vanillic, and salicylic acids (Derek et al 1989;Harborne and Baxter 1993;NitaLazar et al 2004;Prats et al 2006), and the coumarin scopoletin (Uritani and Hoshiya 1953;Minamikawa et al 1992Minamikawa et al , 1964Murray et al 1982;Tanaka et al 1983;Gutiérrez et al 1995;Prats et al 2006). These results suggest that the antifungal activity of in vitro quillay culture could be explained, at least partly, by the presence of saponinas and phenolic compounds.…”
Section: Resultsmentioning
confidence: 96%
“…The preliminary analysis by HPLC shows that in vitro quillay ethanolic extracts contain a series of secondary metabolites (Table 1), which have been reported as antifungal compounds on phytopathogenic fungi, such as saponins (Oleszek et al 1990;Osbourn et al 1996;Apablaza et al 2002;Chapagain et al 2007), and the phenolic compounds chlorogenic, caffeic, vanillic, and salicylic acids (Derek et al 1989;Harborne and Baxter 1993;NitaLazar et al 2004;Prats et al 2006), and the coumarin scopoletin (Uritani and Hoshiya 1953;Minamikawa et al 1992Minamikawa et al , 1964Murray et al 1982;Tanaka et al 1983;Gutiérrez et al 1995;Prats et al 2006). These results suggest that the antifungal activity of in vitro quillay culture could be explained, at least partly, by the presence of saponinas and phenolic compounds.…”
Section: Resultsmentioning
confidence: 96%
“…3) and, due to the 150-200-fold increase of scopoletin concentration, it is assumed that scopoletin is involved in the post-harvest physiological deterioration (PPD) of cassava roots (Tanaka et al, 1983;Wheatley and Schwabe, 1985;Buschmann et al, 2000b). Scopoletin accumulation tends to be more pronounced in cassava cultivars with high susceptibility to deterioration; then, after 6 days, the scopoletin concentration is less pronounced due to the metabolism of scopoletin to an insoluble blue-black coloured product (the probable cause of vascular streaking during PPD) by means of a peroxidase (Reilly et al, 2003).…”
Section: Hydroxycoumarinsmentioning
confidence: 99%
“…Increased respiration (Uritani and Reyes 1984;Hirose 1986;Uritani 1998), changes in lipid composition (Lalaguna and Agudo 1989), synthesis of ethene (Hirose et al 1984), accumulation of secondary metabolites from the phenylpropanoid pathway, and increases in many enzyme activities such as PAL and chalcone synthase, glucanase, chitinase, proteinase inhibitors, HRGPs, invertase, catalase, dehydrogenase, peroxidase and polyphenol oxidase (Rickard 1981;Tanaka et al 1983) have been reported during the development of PPD. In addition to detecting PAL and polyphenol oxidase (PPO) activity, cytological analyses of the wound surface in cassava roots showed the presence of phenols, lipids, carbohydrates, and lignins (Rickard 1981).…”
Section: Introductionmentioning
confidence: 96%