Morphological, phyto-physicochemical and nutritional characteristics of seaweeds in Cagayan

This study presents a comprehensive analysis of the morphological, phyto-physicochemical, and nutritional attributes of seaweed species found in the coastal waters of Cagayan, Philippines particularly in Barangay Sta Cruz, Gonzaga.Specifically six seaweeds were studied namely: Sea palm (Caulerpac taxifolia), Sea lettuce (Ulva lactuca linnaeus), Sea hair (Chaetamorpha crassa), Ar-arusip (Caulerpa lentillifera), Guraman (Gracilaria blodgetti ) and Lab-labig (Glacilaria tertorii) were used in the study.These Seaweeds play a pivotal role in marine ecosystems and offer substantial economic potential.However, detailed characterization of local seaweed species is essential for informed resource management and industrial applications.Phytochemical analysis was performed to determine the presence and quantity of bioactive compounds.Additionally, physicochemical properties such as pH, salinity, and nutrient content of the surrounding seawater were measured both on site and laboratory test to provide context for the observed seaweed characteristics.Furthermore, nutritional profiling was carried out using proximate analysis to ascertain the content of essential nutrients and dietary fiber in the selected seaweed species.Results indicated significant variations in the secondary metabolites and nutrient composition among species, highlighting their potential as valuable dietary supplements and functional food ingredients.Secondary metabolites found among the seaweeds include flavonoids and terpenoids among five species, saponins in four species, alkaloids in two species while anthocyanin is found only in Ar-arusip and phenol in Guraman.On the other hand, proximate analysis showed that among the three edible seaweeds Ararusip has the highest crude protein, crude fiber and crude fat compared with Guraman and Lab-labig.Also, the physico-chemical analysis of soil and water habitat of the seaweeds corresponds with the normal standard for marine waters.On-site and laboratory test of the physicochemical analysis of seaweed water provides valuable information about the environmental conditions that influence seaweed growth and health.This data is crucial for making informed decisions regarding seaweed resource management, conservation efforts, and sustainable utilization in various industries.This comprehensive study offers valuable insights into the diversity and potential applications of seaweed resources in Cagayan.The data generated will be invaluable for local stakeholders, including aquaculturists, conservationists, and industrialists, in making informed decisions regarding sustainable resource utilization and development.