Effect of drying on yield and calorific values of extractables from leafy spurge (Euphorbia esula)

Journal Article · Sun Jan 01 00:00:00 EST 1984 · Biotechnol. Bioeng.; (United States)

DOI:https://doi.org/10.1002/bit.260260407· OSTI ID:6565328

Wiatr, S M

The effect of dehydration on yield and calorific values has been investigated for oils, hydrocarbons, and polyphenols extracted from leaves of Euphorbia esula (leafy spurge). Methods of dehydration employed were with a warm oven (50/sup 0/C), a hot oven (105/sup 0/C), at room temperature (25/sup 0/C), and with freeze drying. Generally, dehydration resulted in a loss of yield for all extractives. Noteworthy exceptions were oil yields from the warm-oven- or air-dried biomass which did not differ significantly from fresh tissue. Significant differences in calorific values (range 4643-5192 cal/g) were observed for each category of whole leafy biomass dehydrated as indicated above. Dehydration reduced the calorific value of oils (range 9483-10,095 cal/g) but tended to increase the calorific values of polyphenols (range 4178-6033 cal/g). NMR spectroscopy of the oil fraction suggested that dehydration did not grossly alter the composition of oils, despite differences in yield and calorific values.

• Research Organization: Eastern Montana Coll., Billings
• OSTI ID: 6565328
• Journal Information: Biotechnol. Bioeng.; (United States), Vol. 26:4
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
EUPHORBIA
DEHYDRATION
SOLVENT EXTRACTION
HYDROCARBONS
YIELDS
POLYPHENOLS
VEGETABLE OILS
OIL YIELDS
CALORIFIC VALUE
LEAVES
TEMPERATURE EFFECTS
AROMATICS
COMBUSTION PROPERTIES
EXTRACTION
HYDROXY COMPOUNDS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PHENOLS
PLANTS
SEPARATION PROCESSES
090122* - Hydrocarbon Fuels- Preparation from Wastes or Biomass- (1976-1989)
140504 - Solar Energy Conversion- Biomass Production & Conversion- (-1989)