Cascade utilization of water chestnut: Recovery of phenolics, phosphorus, and sugars

Satoshi Akao, Koutaro Maeda, Yoshihiko Hosoi, Hideaki Nagare, Morihiro Maeda, Taku Fujiwara

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Overgrowth of aquatic plants, such as water chestnut, has been reported as a regional problem in various areas. We proposed cascade utilization of water chestnut through the recovery of phenolics, phosphorus, and sugars. Phenolics were extracted using 50 g (wet weight) of biomass with 300 mL of acetone, methanol, or hot water, and the yields of total phenolics were 80.2, 56.2, and 49.7 mg g-1 dry weight of native biomass, respectively. The rate of eluted phosphorus in the phenolic extraction step was 8.6, 14.8, and 45.3 % of that in the native biomass, respectively, indicating that the use of polar organic solvents suppressed phosphorus elution at the phenolic extraction step. Extraction of phosphorus following the phenolic extraction was combined with alkaline pretreatment (1 % NaOH solution) of biomass for saccharification; 64.1 and 51.0 % of phosphorus in the native biomass were extracted using acetone and methanol for the phenolic extraction, respectively. Saccharification following the alkaline pretreatment showed that the glucose recovery rates were significantly increased (p <0.05) with the phenolic extraction step compared to alkaline pretreatment alone. This finding indicates that extraction of phenolics not only provides another useful material but also facilitates enzymatic saccharification.

Original languageEnglish
Pages (from-to)5373-5378
Number of pages6
JournalEnvironmental Science and Pollution Research
Volume20
Issue number8
DOIs
Publication statusPublished - Aug 2013

Fingerprint

Eleocharis
Sugars
Biomass
Phosphorus
sugar
phosphorus
Recovery
Water
Saccharification
Acetone
biomass
Methanol
water
acetone
Weights and Measures
methanol
aquatic plant
chestnut
Organic solvents
Glucose

Keywords

  • Antialgal effect
  • Aquatic plant
  • Enzymatic saccharification
  • Polyphenol
  • Pretreatment
  • Trapa natans L.

ASJC Scopus subject areas

  • Environmental Chemistry
  • Health, Toxicology and Mutagenesis
  • Pollution

Cite this

Cascade utilization of water chestnut : Recovery of phenolics, phosphorus, and sugars. / Akao, Satoshi; Maeda, Koutaro; Hosoi, Yoshihiko; Nagare, Hideaki; Maeda, Morihiro; Fujiwara, Taku.

In: Environmental Science and Pollution Research, Vol. 20, No. 8, 08.2013, p. 5373-5378.

Research output: Contribution to journalArticle

Akao, Satoshi ; Maeda, Koutaro ; Hosoi, Yoshihiko ; Nagare, Hideaki ; Maeda, Morihiro ; Fujiwara, Taku. / Cascade utilization of water chestnut : Recovery of phenolics, phosphorus, and sugars. In: Environmental Science and Pollution Research. 2013 ; Vol. 20, No. 8. pp. 5373-5378.
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