Abstract
Storage changes after gamma irradiation (10 krad) of five commercial varieties of potatoes, Kufri Chandramukhi, K. Kuber, K. Alankar, K. Sheetman and K. Sinduri, grown in India were ascertained to arrive at optimal storage conditions. The radiation treatment could completely inhibit sprouting in all the varieties, irrespective of storage temperature, in addition to eliminating the tuber moth Pthorimaea operculella (Zeller). The temperature-dependent total losses could be attributed to microbial rotting and dehydration. The organisms causing soft rot at temperatures above 15 Degree-Sign C belonged to Erwinia spp., while the rot caused below 10 Degree-Sign C was essentially due to Micrococcus spp. Irradiation followed by storage at cool temperatures (10-15 Degree-Sign C) offers an alternative method, comparable with conventional refrigerated (2-4 Degree-Sign C) storage. The irradiated potatoes were not amenable to the attack of toxigenic fungi Aspergillus flavus and A. parasiticus during storage. This could be attributed to phenolic compounds present in the tubers. Phenylalanine ammonia lyase (PAL), involved in the metabolism of phenolic compounds, showed enhancement in the irradiated potatoes. The extent of radiation induced activation of PAL is suggested as a biochemical parameter for identifying irradiated tubers. (author)
Thomas, P.;
Srirangarajan, A. N.;
Padwal-Desai, S. R.;
Ghanekar, A. S.;
Shirsat, S. G.;
Pendharkar, M. B.;
Nair, P. M.;
Nadkarni, G. B.
[1]
- Biochemistry and Food Technology Division, Bhabha Atomic Research Centre, Bombay (India)
Citation Formats
Thomas, P., Srirangarajan, A. N., Padwal-Desai, S. R., Ghanekar, A. S., Shirsat, S. G., Pendharkar, M. B., Nair, P. M., and Nadkarni, G. B.
Feasibility of Radiation Processing for Post-Harvest Storage of Potatoes Under Tropical Conditions.
IAEA: N. p.,
1978.
Web.
Thomas, P., Srirangarajan, A. N., Padwal-Desai, S. R., Ghanekar, A. S., Shirsat, S. G., Pendharkar, M. B., Nair, P. M., & Nadkarni, G. B.
Feasibility of Radiation Processing for Post-Harvest Storage of Potatoes Under Tropical Conditions.
IAEA.
Thomas, P., Srirangarajan, A. N., Padwal-Desai, S. R., Ghanekar, A. S., Shirsat, S. G., Pendharkar, M. B., Nair, P. M., and Nadkarni, G. B.
1978.
"Feasibility of Radiation Processing for Post-Harvest Storage of Potatoes Under Tropical Conditions."
IAEA.
@misc{etde_22113859,
title = {Feasibility of Radiation Processing for Post-Harvest Storage of Potatoes Under Tropical Conditions}
author = {Thomas, P., Srirangarajan, A. N., Padwal-Desai, S. R., Ghanekar, A. S., Shirsat, S. G., Pendharkar, M. B., Nair, P. M., and Nadkarni, G. B.}
abstractNote = {Storage changes after gamma irradiation (10 krad) of five commercial varieties of potatoes, Kufri Chandramukhi, K. Kuber, K. Alankar, K. Sheetman and K. Sinduri, grown in India were ascertained to arrive at optimal storage conditions. The radiation treatment could completely inhibit sprouting in all the varieties, irrespective of storage temperature, in addition to eliminating the tuber moth Pthorimaea operculella (Zeller). The temperature-dependent total losses could be attributed to microbial rotting and dehydration. The organisms causing soft rot at temperatures above 15 Degree-Sign C belonged to Erwinia spp., while the rot caused below 10 Degree-Sign C was essentially due to Micrococcus spp. Irradiation followed by storage at cool temperatures (10-15 Degree-Sign C) offers an alternative method, comparable with conventional refrigerated (2-4 Degree-Sign C) storage. The irradiated potatoes were not amenable to the attack of toxigenic fungi Aspergillus flavus and A. parasiticus during storage. This could be attributed to phenolic compounds present in the tubers. Phenylalanine ammonia lyase (PAL), involved in the metabolism of phenolic compounds, showed enhancement in the irradiated potatoes. The extent of radiation induced activation of PAL is suggested as a biochemical parameter for identifying irradiated tubers. (author)}
place = {IAEA}
year = {1978}
month = {Apr}
}
title = {Feasibility of Radiation Processing for Post-Harvest Storage of Potatoes Under Tropical Conditions}
author = {Thomas, P., Srirangarajan, A. N., Padwal-Desai, S. R., Ghanekar, A. S., Shirsat, S. G., Pendharkar, M. B., Nair, P. M., and Nadkarni, G. B.}
abstractNote = {Storage changes after gamma irradiation (10 krad) of five commercial varieties of potatoes, Kufri Chandramukhi, K. Kuber, K. Alankar, K. Sheetman and K. Sinduri, grown in India were ascertained to arrive at optimal storage conditions. The radiation treatment could completely inhibit sprouting in all the varieties, irrespective of storage temperature, in addition to eliminating the tuber moth Pthorimaea operculella (Zeller). The temperature-dependent total losses could be attributed to microbial rotting and dehydration. The organisms causing soft rot at temperatures above 15 Degree-Sign C belonged to Erwinia spp., while the rot caused below 10 Degree-Sign C was essentially due to Micrococcus spp. Irradiation followed by storage at cool temperatures (10-15 Degree-Sign C) offers an alternative method, comparable with conventional refrigerated (2-4 Degree-Sign C) storage. The irradiated potatoes were not amenable to the attack of toxigenic fungi Aspergillus flavus and A. parasiticus during storage. This could be attributed to phenolic compounds present in the tubers. Phenylalanine ammonia lyase (PAL), involved in the metabolism of phenolic compounds, showed enhancement in the irradiated potatoes. The extent of radiation induced activation of PAL is suggested as a biochemical parameter for identifying irradiated tubers. (author)}
place = {IAEA}
year = {1978}
month = {Apr}
}