Development of Liquid Soap and Scrub Products from Lower-Grade Radish of Ban Sa Wang Community, Lopburi Province

Abstract

This research aimed to develop liquid soap and scrub products from lower-grade radish (Raphanus sativus L.) into community products for Ban Sa Wang, and transfer knowledge to the community. Liquid soap and scrub products contained radish extract from lower-grade radish were developed through stakeholder participation process, and knowledge transfer through practical training workshops. Results showed that products with 5% radish extract had the most balanced properties, with appropriate pH values (4.42 - 5.85) for skin (liquid soap 5.61±0.06 and scrub 4.61±0.09), appealing color and fragrance, and acceptable foaming efficiency and physical stability. DPPH antioxidant activity testing revealed that liquid soap and scrub products with 5% extract showed 32.75±1.96% and 34.92±2.14% activity respectively. Consumer satisfaction evaluation from 30 volunteers indicated that products with 5% radish extract received the highest overall satisfaction scores (liquid soap 4.45±0.51 and scrub 4.42±0.56 out of 5). Quality analysis according to herbal product standards confirmed product safety, with no heavy metal contamination or pathogenic microorganisms exceeding standards. This knowledge transfer to the community showed the highest evaluation scores across all three dimensions: knowledge/understanding (4.76±0.35), satisfaction (4.81±0.45), and practical application (4.72±0.25). These evaluation results indicate that the knowledge transferred was appropriate and could be truly applied and utilized within the community. This research demonstrates the potential of lower-grade radish for developing quality and safe cosmetic products, creating added value for agricultural waste, and promoting sustainable income generation for communities.