ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Effect of maceration on respiration of alfalfa.

Kraus, T.J., R. E. Muck and R. G. Koegel.

Transactions of the ASAE. Volume 42, Number 1, Jan/Feb 1999. Pages 5-10.

1999

บทคัดย่อ

Unconditioned and macerated alfalfa samples at approximately 55 and 80% moisture wet basis (w.b.) were incubated at 11 and 31 degrees C for 48 h and rates of CO2 respired from each sample were measured. Production of CO2 from unconditioned alfalfa samples appeared to be due to plant cell respiration while production of CO2 from the macerated alfalfa samples appeared to be due primarily to microbial growth. Typically, the initial respiration rates of the macerated samples were less than the control samples. When the samples were incubated at 31 degrees C, the rates of CO2 production from the macerated samples increased exponentially to approximately four times that of the control samples 6 to 20 h after the samples had been macerated. Consequently, the cumulative loss of DM from the macerated samples during the first 12 h of incubation was less than that of the control samples; however, after 12 h of incubation, loss of DM from the macerated samples increased to nearly twice the level of the control samples. At 11 degrees C, DM losses over 48 h in the macerated treatments were lower than the corresponding control treatments in three of four cases.