The volume includes papers from universities, research institutes, and industrial sectors across the globe presented at the Life Science, Materials, and Applied Chemistry symposium as part of The 7th International Conference on Science and Technology (ICST 2021), which was held in Yogyakarta, Indonesia, 7-8 Sept 2021. There are research results on chemical technologies of environmental engineering, agricultural chemistry, the chemistry of food production, pharmaceutical chemistry, chemical technologies of chemical production, computational materials research, and chemical aspects of sensors development.