The formulation of procyanidin gels based on cellulose and carraghenan derivatives was studied. These gels need to have pH values compatible with anti-ulcer therapy, and a satisfactory viscosity. Their consistency was evaluated by measuring their spreading diameter, and by a rheological study. The speading diameter and viscosity of the formulations based on cellulose derivatives were linearly related.
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Vennat et al. (1992) studied this question.
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