Extraction and characterization of collagen and gelatin from body wall of sea cucumbers Stichopus horrens and Holothuria arenicola 1Higher Institution Centre of Excellence, Borneo Marine Research Institute, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, Malaysia 2Department of Marine Biology, Faculty of Marine Sciences, Chabahar Maritime University, Chabahar, Iran 3Fisheries Department, Faculty of Marine Sciences, Chabahar Maritime University, Chabahar, Iran 4Institute of Integrated Science...