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Drying of seaweeds and other plants. V. —through‐circulation drying of ascophyllum nodosum in a semi‐continuous dryer
Author(s) -
Merritt J. H.,
Young E. Gordon
Publication year - 1963
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740140106
Subject(s) - ascophyllum , tray , brown seaweed , water content , moisture , botany , chemistry , horticulture , pulp and paper industry , algae , materials science , biology , composite material , geotechnical engineering , engineering
The drying of the common rockweed, Ascophyllum nodosum, has been studied on a semi‐commercial scale by through‐circulation in a semi‐continuous dryer of original design to determine optimum conditions. A feasible loading for fresh rockweed of 8°% initial moisture content was approximately 6° Ib./sq. ft./tray with air flow up to 8° Ib. of dry air/min./sq. ft. At temperatures from 120° to 21° F heat consumptions of 1200–2000 B.Th.U./lb. of water evaporated were recorded. The yield of alginate was unaffected by the temperature employed, but discoloration of the powdered weed and of the extracted product occurred in direct proportion to it. The coefficient of viscosity of the alginate was approximately inversely proportional to the temperature of drying.