Decreased sweetpotato decay after storage by alternative treatments
Afek U.; Orenstein J.; Droby S.; Fallik E.; Di Primo P. and Zur K.M.
5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004, p.103
2004
บทคัดย่อ
Decreased sweetpotato decay after storage by alternative treatments
‘Georgia Jet’ is the predominant sweetpotato (
Ipomoea batatas (L.) Lam) cultivar grown in
Israel. This cultivar is susceptible to diseases during storage and shelf life (20°C). After 6 months of storage plus 50 days of shelf life (in all of the experiments the treatments were applied after storage of 6 months), the percentages of decay caused by
Rhizopus spp. following treatment with yeast (Ex. No. 25-03) was 7% compared to 35% in the nontreated control. The percentages of decay following treatment with yeast (Ex. No. 20-03) after 21 days was 0% compared to 7% in the nontreated control. The percentages of decay following treatment with yeast (Ex. No. 18-03) after 35 days was 12% compared to 28% in the nontreated control.
In other experiments the effect of hot water and hot water plus yeast were tested on sweetpotato decay caused by Rhizapus spp. during shelf life (20°C). Percentages of decay following treatment with hot water 55°C for 18 s after 31 days of shelf life was 15% compared to 30% at 50°C and 76% in the nontreated control. Percentages of decay following treatment with hot water at 55°C for 18 s plus yeast after 31 days of shelf life was 2%