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Table 1 Sweet potato composition

From: Evaluation of sweet potato for fuel bioethanol production: hydrolysis and fermentation

Sweet potato

Water content (%)

Free sugars (% w/w db)

Starch (% w/w db)

Total sugars in glucose equivalent (% w/w db)

Fiber (% w/w db)

Proteins (% w/w db)

Lipids (% w/w db)

Ash (% w/w db)

Glucose

Fructose

Sucrose

Fresh

73.1 ± 0.1

2.4 ± 2.1

2.6 ± 1.6

8.0 ± 0.4

55.5 ± 1.8

75.0 ± 6.1

1.0 ± 0.1

3.5 ± 0.8

0.4 ± 0.1

4.1 ± 0.3

Flour

7.7 ± 0.0

2.1 ± 0.2

1.6 ± 0.1

15.8 ± 0.6

51.1 ± 3.7

77.0 ± 5.0

3.0 ± 0.3

6.6 ± 1.5

1.8 ± 0.5

2.7 ± 0.1

  1. db: dry base.
  2. Total sugar in glucose equivalent was calculated as the sum: 1.11 × starch + glucose + fructose + 1.05 × sucrose.