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Title:   Author  item
                                            Fishman, Marshallitem
                                            WALKER, PAUL - PENN STATE UNIVERSITYitem
                                            Chau, Hoa

                                                         - *Rose*item
                                            Hotchkiss, Arland
  Submitted to: Meeting Abstract
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 8/31/2003
                                    Publication  Date: 9/1/2003
                                    Citation: Fishman, M.L., Walker, P.N., Chau, H.K., Hotchkiss, A.T. Flash extraction of pectin from orange albedo by steam injection. Abstract, American Chemical Society 226th National Meeting, New York, NY, September 7-11, 2003.Interpretive Summary:
                                Technical Abstract: Pectin was acid extracted from orange albedo by steam injection heating under pressure.  Extraction times ranged from 2 to 6 min at a pressure of about 15 psi.  Solubilized pectin was characterized by HPSEC with online light scattering and viscosity detection.  Molar mass (M), radius of gyration (Rg) and intrinsic viscosity (IV) all decreased with increasing extraction time when heating temperature was 120  C.  At heating times of  3 min, Mw ranged from 4.9 to 4.5 × 105, Rgz was about 44 nm and IVw ranged from 8.4 to 7.9 dL/g.  These values were higher than values found for commercial citrus pectin.  Analysis of scaling law exponents for pectin fractions revealed that pectin distributions were mixtures of two or more of the following:  spherical aggregates, hydrogen bonded network structures; and partially or fully disaggregated components of network structures which could include branched structures, rods, segmented rods and kinked rods.


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