Related Experiment Video
Updated: Jan 30, 2026

Single-Cell Suspension Preparation from Nile Tilapia Intestine for Single-Cell Sequencing
Published on: February 10, 2023
Functional Characteristics of Ultraviolet-Irradiated Tilapia Fish Skin Gelatin
Cheng-Kuo Wu1, Jenn-Shou Tsai2, Wen-Chieh Sung3
1Department of Food Science, National Taiwan Ocean University, 2 Pei-Ning Road, Keelung 20224, Taiwan. calvin26268@gmail.com.
Abstract:
Studies were undertaken to investigate the effects of ultraviolet (UV) irradiation on the gel strength, color, thermal properties, protein molecular masses, and functional groups of commercially available fish gelatin samples. Commercially available tilapia skin gelatin powder was used as the raw material to investigate the functional properties of fish skin gelatin powder treated with UV irradiation for different durations (0⁻6 h). The functional properties of fish gelatin and the optimum irradiation treatment conditions were determined through gel strength testing, color characterization, differential scanning calorimetry, sodium dodecyl sulfate polyacrylamide gel electrophoresis, Fourier transform infrared (FTIR) spectroscopy, and Raman spectroscopy. UV irradiation treatment increased gel strength and thermal stability, and significantly degraded the macromolecules. FTIR and Raman spectroscopy data indicated that UV irradiation treatment did not significantly change the molecular structure of fish gelatin powder, but these methods could discriminate the molecular structure of gelatin from various sources. Irradiation for 2 h yielded the highest gel strength and melting peak temperature, and the lowest chromatic aberration.
Related Concept Videos
Characteristics and Functions of Blood
The primary function of blood is to transport oxygen and carbon dioxide between tissues and the lungs. Oxygenated blood is bright red, while oxygen-depleted blood is darker. It also carries...
Osmoregulation in Fishes
Sensory Functions of the Skin
There are two main categories of receptors on the skin: capsulated and non-capsulated. The non-capsulated ones are mainly the pain receptors. The capsulated ones can be further categorized based on the...
Characteristics of Life
Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview
Characteristics of Fluids

