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Table 4 Mean values of the proximate compounds grouped in clusters at different harvesting periods

From: Genotypic and environmental factors influence the proximate composition and quality attributes of sweetpotato (Ipomoea batatas L.)

Harvest time DMC (%) AC* TPC* CF* TSS (°Brix)
Cluster G1
 90 31.2 ± 5.3Ab 4.2 ± 1.3a 7.1 ± 2.1a 3.7 ± 1.1B 8.5 ± 1.7c
 120 33.8 ± 4.7Aa 4.3 ± 1.4Ba 5.2 ± 2.4Bb 3.9 ± 1.6 10.1 ± 3.2Bb
 150 35.2 ± 6.3Aa 3.6 ± 0.8Bb 5.7 ± 2.3Bb 3.6 ± 1.3B 11 ± 2.4Ba
Cluster G2
 90 25.9 ± 6.5B 4.6 ± 1.2b 7 ± 2.5 4.7 ± 1.7A 8 ± 1.8b
 120 26.8 ± 4.5B 5.3 ± 1.7Aa 7.1 ± 3.2A 4.4 ± 1.3 9.7 ± 1.8Ba
 150 27.4 ± 6.1B 4.6 ± 1.5Ab 6.8 ± 3.1A 4.3 ± 1.2A 10 ± 3Ca
Cluster G3
 90 29.8 ± 6.4ABb 3.8 ± 0.8 6 ± 2.2 4.2 ± 1.1AB 8.5 ± 1.9b
 120 33.9 ± 6.2Aab 4.3 ± 1.5AB 6.1 ± 2.5AB 5 ± 1.4 14.7 ± 3.7Aa
 150 37.3 ± 6.4Aa 3.6 ± 0.7B 6 ± 2.5AB 4.6 ± 2A 14 ± 3.4Aa
  1. DMC dry matter content, AC ash content, CF crude fiber, TPC total protein content, TSS total soluble solids
  2. Different capital letters indicate significant differences among clusters at the same harvest time, and lower-case letters indicate significant differences among harvest time in the respective clusters determined by the LSD test (p < 0.01); *g/100 g of dry weight
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