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Related to buffering agent: buffer capacity
buffering agent[′bəf·ə·riŋ ‚a·jənt]
A chemical, such as lactic, citric, or acetic acid or the sodium salts of various acids, added to processed food to adjust and regulate its pH.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.