title: Comparison of properties of new sources of partially purified inulin to those of commercially pure chicory inulin.
abstract: Newly developed inulin powders were prepared from roots of Asparagus falcatus (AF) and Taraxacum javanicum (TJ) plants grown in Sri Lanka. Inulin content, analyzed by enzymatic spectrophotometric as well as high-performance liquid chromatographic methods, showed that AF and TJ inulin powders contain 65.5% and 45.4% (dry wt) inulin, respectively, compared with 72% dry wt in the commercially available chicory inulin. Treating the AF and TJ inulin powders using ion exchange techniques significantly (P < 0.05) reduced their contents of micro (Zn, Cu, Mn, Fe) and macro (Na, K, Ca, Mg) elements. Enzymatic hydrolysis of inulin into fructose and glucose by fructanase, and FT-IR analyses proved that the developed AF and TJ inulins have characteristic molecular composition similar to commercial inulin. TJ inulin contained significantly (P < 0.05) greater amounts of total phenolics (4.37 mg GAE/g), total flavonoids (2.79 mg QE/g), and antioxidant capacity (833.11 mM TE/g) than AF inulin, which contained 1.33 mg GAE/g of total phenolics, 0.43 mg QE/g of total flavonoids, and 406.26 mM TE/g antioxidant capacity. The current study suggests that the newly developed inulin from AF and TJ roots could be used as an alternative commercial source of inulin for the food industry.
authors.affiliation: Biosciences Section, Faculty of Veterinary and Agricultural Sciences, The Univ. of Melbourne, Victoria, 3010, Australia.
authors.forename: Deshani C
authors.initials: DC
authors.lastname: Mudannayake
authors.affiliation: Dept. of Food Science and Technology, Faculty of Agriculture, Univ. of Peradeniya, Peradeniya, Sri Lanka.
authors.forename: Kuruppu M S
authors.initials: KM
authors.lastname: Wimalasiri
authors.affiliation: Dept. of Animal Science, Faculty of Agriculture, Univ. of Peradeniya, Peradeniya, Sri Lanka.
authors.forename: Kahandage F S T
authors.initials: KF
authors.lastname: Silva
authors.affiliation: Biosciences Section, Faculty of Veterinary and Agricultural Sciences, The Univ. of Melbourne, Victoria, 3010, Australia.
authors.forename: Said
authors.initials: S
authors.lastname: Ajlouni
mesh_terms: D000975:Antioxidants / Q000032:analysis* / Q000494:pharmacology; D027761:Asparagus Plant / Q000737:chemistry*; D018651:Cichorium intybus / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D005419:Flavonoids / Q000032:analysis; D005632:Fructose / Q000032:analysis; D005947:Glucose / Q000032:analysis; D006026:Glycoside Hydrolases / Q000378:metabolism; D006801:Humans; D007444:Inulin / Q000737:chemistry* / Q000302:isolation & purification; D009753:Nutritive Value; D010636:Phenols / Q000032:analysis; D028321:Plant Preparations / Q000737:chemistry; D018517:Plant Roots; D017550:Spectroscopy, Fourier Transform Infrared; D013188:Sri Lanka; D031205:Taraxacum / Q000737:chemistry*; D014131:Trace Elements / Q000032:analysis*
chemical_list: D000975:Antioxidants; D005419:Flavonoids; D010636:Phenols; D028321:Plant Preparations; D014131:Trace Elements; D005632:Fructose; D007444:Inulin; D006026:Glycoside Hydrolases; C021512:levanase; D005947:Glucose
keywords: FT-IR; HPLC; antioxidant capacity; inulin; phenolic compounds