Influence of sweet corn harvest date on kernels quality

Abstract

Sweet corn has a very short period of optimum harvest maturity, and its quality changes rapidly close to and following the peak. The aim of this study was to determine the sweet corn quality on the ground of some physicochemical properties of intact kernels (moisture content, compression, shear and puncture force, bulk density, sugar and starch contents) and cut kernels (processing recovery, cut corn yield) at four subsequent harvest dates. The moisture content, sugars level, and ear yield decreased. The starch level, bulk density (intact and cut kernels), compression force, shear force and puncture force, processing recovery and cut corn yield increased. The first harvest date showed a greater advantage in the higher sweet corn quality for processing than the following harvest date. The moisture decreased from 77.41% to 69.83% with delayed harvest date. A decline was observed of sweet corn quality (increase of force in compression, shear and puncture tests, raise in the starch level). However, the following harvest date had an advantage in a higher processing recovery and cut corn yield.

Kernel Quality of Some Sweet Corn Varieties in Relation to Processing

“…These results are in close agreement with earlier report of Lertrat and Pulam (2007). Also, the starch content values for fresh kernels reported here are similar to those found by Szymanek (2009).…”

“…Both main effects and the interaction between the experimental factors on starch content were found to be statistically significant (p<0.01) in 2009 and2010 (Tab. 3).…”

Mechanical properties of sugar beet root during storage

“…The mechanical properties of the beet, together with sucrose, soluble solids and moisture content, are important parameters in evaluating the sucrose yield and the cost of sugar beet production, and also for assessing new sugar beet germplasms and/or cultivars (Cheng et al, 2011;Kabas and Ozmerzi, 2008;Kertész et al, 2015;Kumbár et al, 2015). Most of these properties are evaluated through compression, rheological and puncture testing (Sirisomboon et al, 2012;Szymanek, 2009;Trávníček et al, 2016;Trnka et al, 2016). The compression test is effective in evaluating the mechanical response of the whole agricultural product, while the puncture test is useful in indicating the approximate strength of the peel and the flesh at the puncture point .…”

Aplikasi Pupuk Organik Cair dan Pupuk Anorganik terhadap Pertumbuhan, Produksi, dan Kualitas Pascapanen Jagung Manis (Zea mays var. saccharata Sturt.)

“…Kandungan padatan terlarut adalah salah satu atribut kualitas jagung manis (Szymanek, 2009). Indikasi adanya perubahan kimiawi selama penyimpanan yaitu terjadinya penurunan kadar Brix yang drastis pada 5 dan 8 hari setelah panen (Tabel 6).…”