Effects of Paenibacillus brasilensis YS-1 Crude Extracts on Storage of Nanfeng Mandarin
Article
Figures
Metrics
Preview PDF
Reference
Related
Cited by
Materials
Abstract:
The fruits of Nanfeng mandarin “97-2” were treated with the crude extracts of Paenibacillus brasilensis YS-1, then stored at 5±1 ℃ for 100 days. The postharvest physiology and storability of fruits were investigated and compared with 500-fold dilution of an antistaling agent named “Kelixian” treatment and distilled water as control. The result showed that the treatment of crude extracts of YS-1 and 500-fold dilution of “Kelixian” effectively inhibited the growth of P. intalicum, and the inhibition diameters were 20.20 cm and 51.12 cm respectively. The rotting rate and weight loss rate of fruits which treated with crude extracts of YS-1 were 20.67% and 3.75%, which significantly higher than distilled water but lower than “Kelixian” treatment. And the contents of total soluble solids, total sugars and Vc were increased to 15.70%、19.57% and 24.58%, respectively. It also delayed the decline rate of total soluble solids and contents of total sugars and titratable acids, while effectively kept the storage quality of the fruit. In addition, crude extracts of YS-1 treatment decreased respiration rate and MDA content in the middle and later periods of storage, and increased the SOD, POD and PAL activities. It indicated that crude extracts of P. brasilensis YS-1 treatment can keep the quality of fruit, improve the ability of disease resistance, and delay the fruit senescence of Nanfeng mandarin during storage.
