Dry-matter—a better predictor of the post-storage soluble solids in apples?
V. Andrew McGlone , , Robert B. Jordan, Richard Seelye and Christopher J. Clark
Postharvest Biology and Technology Volume 28, Issue 3 , June 2003, Pages 431-435
2003
บทคัดย่อ
The accuracy of dry-matter (DM) and soluble solids content (SSC) predictions, based on 800–1000 nm near infrared spectrometric measurements, are reported for ‘Royal Gala’ apples (Malus domestica Borkh.). Predictive models were created from spectral and constituent measurements made either immediately after harvest or after 6 weeks cool storage. All DM predictive models were very accurate (R2>0.95, rmsep<0.32%), whether at harvest or post-storage. The SSC predictive models were more accurate post-storage (R2=0.94, RMSEP=0.32%) than at harvest time (R2=0.79, RMSEP=0.51%). Harvest-time DM predictions were strongly correlated with the post-storage SSC (R2=0.93) and so provide the means of, at least, rank ordering the apples in terms of post-storage SSC.