Seasonal variation in the biochemical composition of red seaweed (Catenella repens) from Gangetic delta, northeast coast of India

Abstract

The biochemical composition of red seaweeds, Catenella repens was investigated in this present study along with subsequent analysis of relevant physico-chemical variables. In this study, the relationship between the nutritive components of this species and the ambient environmental parameters was established. Protein content varied from 2.78 ± 0.30% of dry weight (stn.3) to 16.03 ± 0.96% of dry weight (stn.1) with highest values during monsoon. The protein levels were positively correlated with dissolved nitrate content and negatively correlated with water temperature (except stn.3) and salinity. Carbohydrate content of this species varied significantly (p < 0.05) during pre-monsoon between stations and the values showed positive relationship with salinity and surface water temperature. In contrast to carbohydrate, lipid concentration was lowest in values and varied very slightly between seasons and stations. Astaxanthin content of the seaweed species was greater in pre-monsoon than monsoon and post-monsoon in all the selected stations. Compared with the three seasons, samples of red seaweed collected in pre-monsoon has high carbohydrate-astaxanthin in contrast to protein-lipid which showed high values during monsoon. Statistical analysis computed among the environmental and biochemical parameters suggests the potential role played by the abiotic parameters on biosynthetic pathways of seaweed. This paper also highlights the influence of the nutritional quality of water that can be used for mass cultivation of Catenella repens.

Nutrient Content, Phytonutrient Composition, Alpha Amylase, Alpha Glucosidase Inhibition Activity and Antioxidant Activity of the Stoechospermum Marginatum Collected in Pre Monsoon Season

“…Peng et al (2013) reported that 45.73 percent of carbohydrate is present in brown seaweed Sargassum nazhouense. Similar results were reported by Banerjee et al (2009) the highest amount of carbohydrate was detected in the pre monsoon season. The carbohydrate values are correlated between the salinity and surface water temperature.…”

Evaluating the chemical composition and antioxidant activity of three Egyptian seaweeds: Dictyota dichotoma, Turbinaria decurrens, and Laurencia obtusa

“…Their classification is based mainly on the colour of the thallus, pigment composition, ultrastructure and biochemical features (Dawczynski et al, 2007;Guiry, 2017). Several articles reported on the chemical composition of different seaweed species collected from different parts of the world, to evaluate their commercial and nutritional value (Renaud & Luong-Van, 2006;Banerjee et al, 2009;Gressler et al, 2011;Ahmad et al, 2012;Rohani-Ghadikolaei et al, 2011;Khairy & El-Shafay, 2013). The seaweeds investigated showed variable chemical compositions which depended on the species, collection season, geographic habitat and other physicochemical parameters (Marinho-Soriano et al, 2006;Marsham et al, 2007;Dawczynski et al, 2007).…”

Performa Komoditas Budidaya Laut Pada Sistem Integrated Multi-Trophic Aquaculture (Imta) Di Teluk Gerupuk, Lombok Tengah, Nusa Tenggara Barat

“…Perbedaan pola pertumbuhan harian rumput laut yang ditemukan pada penelitian ini dapat dipengaruhi oleh kondisi lingkungan perairan dan iklim sehingga dapat memengaruhi respons metabolik berupa laju pertumbuhan dan laju fotosintensis (Banerjee et al, 2009). Hasil penelitian Erlania & Radiarta (2014) juga menemukan pola pertumbuhan yang sama untuk empat strain rumput laut Kappaphycus alvarezii varian Tambalang dan varian Maumere, K. striatum, Eucheuma denticulatum yang dibudidayakan di Teluk Gerupuk tahun 2013 yaitu pada bulan Juli-Oktober memiliki tingkat pertumbuhan dan produktivitas yang baik dibandingkan dengan bulan November-Desember.…”