บทคัดย่องานวิจัย

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Determination of apple maturity by NIT.

Lovasz, T.; Salgo, A.; Meresz, P.; Sass, P.;

Acta Horticulturae Year: 1994 Issue: No. 368 Pages: 276-280 Ref: 5 ref.

1994

บทคัดย่อ

Determination of apple maturity by NIT.

ABSTRACT :

 

Application of the near infrared transmission (NIT) method for analysing chemical and physical properties of apples was investigated. Six apple cultivars (Jonnee, Jonagold, Jonathan, Golden Delicious, Gloster and Mutsu) from 3 different picking dates (10 d apart) were used. Calibrations of DM and juice pH showed the best correlation (linear correlation coefficient (C)>0.90, coefficient variation (cv)=3-4%). Hardness, acidity and pectin content had lower correlation values (C=0.85-0.88, cv=9-10%). Refraction showed extremely low correlation (C=0.75, cv=7%) because of the lack of reliable determination.