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Analysis of an Acid Hydrolysate of a Low‐Substituted Hydroxypropyl Starch
Author(s) -
Leegwater D. C.,
Marsman J. W.,
MacKor A.
Publication year - 1973
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.19730250408
Subject(s) - hydrolysate , moiety , chemistry , starch , hydrolysis , nuclear chemistry , organic chemistry , polymer chemistry
The major components, besides glucose, of an acid hydrolysate of a low‐substituted hydroxypropyl starch (DS 0.07) were identified by proton magnetic resonance (PMR) analysis of their peracetates as 6‐0‐[2‐(RS)‐hydroxypropyl]‐D‐glucopyranose, 2‐0‐[2‐(RS)‐hydroxypropyl]‐D‐glucopyranose, 1,2‐0‐[2,1‐(R)‐propylene]‐α‐D‐glucopyranose, 1,2‐0‐[2,1‐(S)‐propylene]‐α‐D‐glucopyranose, and 1,2‐0‐[2,1‐(R)‐propylene]‐α‐D‐glucofuranose. The analytical data indicated that in the product examined over 80% of the hydroxypropyl groups were attached to C‐2 of the glucose moiety and about 7% to C‐6.