Progress in the chemistry of shortleaf and loblolly pine bark flavonoids (1976)Hemingway, R., & McGraw, G. (1976). Progress in the chemistry of shortleaf and loblolly pine bark flavonoids. Applied Polymer Symposium No. 28: 1349-1364. Retrieved from https://www.srs.fs.usda.gov/pubs/ja/ja_hemingway027.pdf The forest products industries of the southern United States harvest approximately 7 million dry tons of pine bark each year. This resource receives little utilization other than recovery of fuel values. approximately 2 million dry tons (30-40% of bark dry weight) of potentially valuable polyflavonoids are burned annually. Conifer bark flavonoids have potential industrial application in manufacture of antioxidants, pigments, adhesives, clay dispersants, grouting agents, water-soluble heavy-metal fertilizers, ion exchange resins, and additives for boiler water, and drilling muds [1]. As witnessed by the recent interest in finding substitutes for phenol, the commercial potential for silvichemicals is improving greatly
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