International Journal of Aquaculture, 2024, Vol.14, No.4, 211-220 http://www.aquapublisher.com/index.php/ija 214 introduction of Laminaria japonica can alter the abundance and diversity of benthic organisms, which can have broader ecological implications (Duan et al., 2019). Additionally, the farming practices can impact the gut microbiota of local marine species, influencing their health and metabolic processes (Chu et al., 2019). These biodiversity and habitat changes highlight the need for careful management and monitoring of Laminaria japonica farming to ensure sustainable practices that minimize negative environmental impacts. 5 Sustainability Practices inLaminaria japonica Farming 5.1 Eco-friendly farming techniques Eco-friendly farming techniques are essential for the sustainable cultivation of Laminaria japonica. One effective method is the use of organic farming practices, which have been shown to benefit multiple wildlife taxa and enhance biodiversity. For instance, organic farming in rice paddies has been associated with higher species richness and abundance of various taxonomic groups, including plants, invertebrates, and birds (Katayama et al., 2019). Applying similar organic practices to Laminaria japonica farming could potentially yield similar ecological benefits. Additionally, the use of natural fertilizers and the avoidance of chemical pesticides can help maintain the health of marine ecosystems and reduce the environmental footprint of seaweed farming. 5.2 Waste management and recycling Effective waste management and recycling are crucial for minimizing the environmental impact of Laminaria japonica farming. One innovative approach is the conversion of seaweed biomass into biochar, which can be used as a soil amendment to improve soil health and sequester carbon. Research has shown that biochars derived from Laminaria japonica exhibit environmentally persistent free radicals (EPFRs), which can vary depending on the pyrolysis temperature and the habitat of the seaweed (Huang et al., 2020). Additionally, the byproducts of Laminaria japonica, such as soluble dietary fiber (SDF), can be utilized in various applications, including functional foods and supplements, thereby reducing waste and promoting a circular economy (Wang et al., 2022) (Figure 1). Figure 1 Impact of soluble dietary fiber (SDF) fromLaminaria japonica on diabetic mice (Adapted from Wang et al., 2022) Wang et al. (2022) depicts the process and benefits of using soluble dietary fiber (SDF) derived fromLaminaria japonica byproducts in diabetic mice. SDF, known for its excellent water-holding, oil-holding, and glucose absorption capacities, was administered to diabetic mice. The treatment resulted in reduced body weight, lower serum lipid levels, and decreased blood glucose. Additionally, SDF altered the gut microbiota, increasing beneficial bacteria like Akkermansia, Odoribacter, and Bacteroides, while reducing harmful Staphylococcus.
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