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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