Growth rate and carrageenan yield of cultivated Kappaphycus alvarezii (Doty) Doty in the coastal waters of Bay of Bengal at Chepala Timmapuram, Andhra Pradesh, east coast of India

Periyasamy, C.; Rao, P. Vivekananda

doi:10.1007/s10811-017-1099-1

Cited by 16 publications

(3 citation statements)

References 44 publications

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“…For example if for the chemical ‘Agar’ cf min = 0.1, cf max = 0.2 and cft 50 is 30, then cf (30) will be 0.15 (15%) at 30 days after planting. Previous studies by Periyasamy et al ( 2019 ) and Periyasamy and Rao ( 2017 ) showed data following a sigmoid pattern for carrageenan content in semi dry Kappaphycus as a function of days after planting. Here we will show in section 3 the sigmoid Eq.…”

Section: Bio-economic Seaweed Model (Besem)mentioning

confidence: 88%

The Bio Economic Seaweed Model (BESeM) for modelling tropical seaweed cultivation – experimentation and modelling

Oort¹,

Rukminasari

Latama

et al. 2022

J Appl Phycol

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The Bio Economic Seaweed Model (BESeM) is a model designed for modelling tropical seaweed cultivation. BESeM can simulate the common tropical seaweed cultivation system with multiple harvests per year, clonal reproduction and labour intensive harvesting and replanting activities. Biomass growth is modelled as a sigmoid, with growth being initially exponentially and eventually flattening off towards a maximum weight per plant or per square meter (wf,max). To estimate the latter, longer duration experiments than normal are needed – in the order of 100 days rather than 45 days. Drying (on platforms on the beach) is simulated as well as increase in harvested chemical concentration over time since planting, for harvested chemicals such as agar extracted from Gracilaria or carrageenan extracted from Kappaphycus or Euchema. BESeM has a limited number of parameters which makes it easily amenable to new sites and species. An experiment is presented for a site in Indonesia in which Gracilaria was monitored for 120 days in 6 nearby sites and from which BESeM model parameters were estimated. A simulation example is presented which illustrates how BESeM can be used to find the optimum combination of replanting weight and harvest cycle length (in days) for maximising gross and net farm income.

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Section: Bio-economic Seaweed Model (Besem)mentioning

confidence: 88%

The Bio Economic Seaweed Model (BESeM) for modelling tropical seaweed cultivation – experimentation and modelling

Oort¹,

Rukminasari

Latama

et al. 2022

J Appl Phycol

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“…The use of bag in seaweed cultivation has tendency that can increase the growth of seaweed. The study by Periyasamy and Rao (2017), showed that seaweed cultivation using monoline netbag method had better growth performance than using monoline tubular method thus it enabling seaweed cultivator to gain bigger profit. Hendri (2020), stated seaweed that grow optimally can produce high quality carrageenan.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of seaweed caraginan Kappaphycus alvarezii on cultivation system with different seed weight

Rasnijal,

Kurniaji,

Anton

et al. 2024

Jurnal Akuakultur Indonesia

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Seaweed (Kappaphycus alvarezii) could be a source of carrageenan needed for industrial sector. The purpose of this study to analyze the characteristics of carrageenan seaweed cultivated with bag and non-bag cultivation systems and different seed weights. The research was conducted in the waters of Bone Bay and the Laboratory of the Indonesian Center for Brackish Water Cultivation and Fisheries Extension in Maros. This study used a factorial completely randomized design (CRD) consisting of factor A (using bags and non-bags), and factor B (seed weight 15, 50, 75, 100, and 125 g). The results showed that the cultivation method factor, seed weight factor, and their interaction had an effect on carrageenan yield, gel strength, ash content and water content (P <0.05). Different cultivation systems with different initial seed weight combinations showed different best results for each parameter. The highest value of yield of carrageenan was observed in the bag culture system with a seed weight of 100 g, namely 29.18 ± 1.10%. The highest value of gel strength was observed in the non-bagged cultivation system with a seed weight of 75 g, namely 1344.69 ± 18.43 g/cm2. The highest value of ash content was found in the non-bagged cultivation system with 125 g of seed weight, namely 30.02 ± 0.13%. The highest value of water content was found in the bag culture system at a seed weight of 15 g, namely 38.63 ± 0.26%. Different cultivation methods and seed weight resulted in other carrageenan characteristics of seaweed for each parameter. Keywords: gel strength, ash content, moisture content, yield ABSTRAK Rumput laut (Kappaphycus alvarezii) memiliki potensi sebagai sumber karaginan yang banyak dibutuhkan untuk bidang industri. Penelitian ini bertujuan untuk menganalisis karakteristik karaginan rumput laut yang dibudidayakan dengan sistem budidaya kantong dan non kantong serta berat bibit yang berbeda. Penelitian dilaksanakan di perairan Teluk Bone dan Laboratorium Balai Riset Budidaya Air Payau dan Penyuluhan Peikanan Maros. Percobaan penelitian dilakukan melalui rancangan acak lengkap (RAL) faktorial yang terdiri faktor A (memakai kantong dan non kantong), faktor B (berat bibit 15, 50, 75, 100, dan 125 g). Hasil penelitian menunjukkan bahwa faktor metode budidaya, berat bibit dan interaksi keduanya berpengaruh terhadap rendeman karaginan, kekuatan gel, kadar air, kadar abu (P<0,05). Penggunaan sistem budidaya yang berbeda dengan kombinasi berat awal bibit berbeda menunjukkan hasil terbaik yang tidak sama pada tiap parameter. Nilai tertinggi rendeman keraginan teramati pada sistem budidaya kantong dengan berat bibit 100 g yakni 29,18 ± 1,10 %. Nilai tertinggi kekuatan gel teramati pada sistem budidaya non kantong dengan berat bibit 50 g yaitu 1344,69 ± 18,43 g/cm2. Nilai kadar abu tertinggi pada sistem budidaya non kantong dengan berat bibit 125 g yaitu 30,02 ± 0,13%. Nilai kadar air tertinggi pada sistem budidaya kantong dengan berat bibit 15 g yaitu 38,63 ± 0,26 %. Penggunaan metode budidaya dan berat bibit yang berbeda menghasilkan karakteristik karaginan rumput laut yang berbeda pada tiap parameter. Kata kunci: kekuatan gel, kadar abu, kadar air, rendemen

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“…To increase the economic viability, sequential extractions of the same biomass of K. alvarezii to obtain carrageenan, chlorophyll, b-carotene, essential amino acids and phytohormones have been suggested for a green biorefinery development (Rudke et al, 2020). Several investigations have been focused on improving biomass cultivation methods of Kappaphycus as a monoculture such as micropropagation (Rama et al, 2018;Ali et al, 2020), culture on biofloc effluents (Pires et al, 2021), tissue culture (Budiyanto and Abadi, 2019), or as part of an IMTA using different systems like floating bamboo raft (Mantri et al, 2022), tubular net (Reis et al, 2015;Periyasamy and Subba Rao, 2017), floating cages and longlines (Mustafa, 2017), and stratified double net rounded cage (Putro et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Valorization of the chemical diversity of the tropical red seaweeds Acanthophora and Kappaphycus and their applications in aquaculture: A review

Guillen

Motti²,

Mangelinckx³

et al. 2022

Front. Mar. Sci.

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The role that seaweeds play as primary producers and ecosystems engineers in marine coastal ecosystems is widely acknowledged. Seaweeds, however, are also important drivers in the development of the blue bioeconomy due to their vast diversity of unique chemicals with a broad range of industrial and biotechnological applications. In tropical regions, seaweed production has been focused on a few species only, because of their hydrocolloids used in the food industry. There is a strong need to identify new applications of red seaweed species in other sectors such as aquaculture. Therefore, to diversify the culture of red seaweeds, more tropical species need to be investigated for their chemical composition and potential application in aquaculture, and then, to develop a method for a sustainable cultivation of new seaweed candidates and enhance their economic potential. Based on this context, we analyze the potential value of the red edible seaweed Acanthophora spp., an under-valued seaweed species which is naturally abundant in tropical countries, and Kappaphycus spp., a commercially valuable seaweed commonly used for polysaccharide extraction. The vast chemical diversity of seaweeds (polysaccharides, phytohormones, amino acids, and pigments) has led to research on a wide range of applications in aquaculture, including pathogen control, immunostimulant, antioxidant, bioremediation, feed, UV protectants, increase in seafood shelf life, animal colorant, and growth regulator for microalga culture. This review hopes to stimulate the interest among seaweed researchers to investigate other local seaweed species and seek greater added value of their biomass and chemical compounds and their applications in the aquaculture sector. Additionally, this information will help stakeholders to benefit from these two red seaweeds by contributing to the diversification of the blue bioeconomy in tropical countries.

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Growth rate and carrageenan yield of cultivated Kappaphycus alvarezii (Doty) Doty in the coastal waters of Bay of Bengal at Chepala Timmapuram, Andhra Pradesh, east coast of India

Cited by 16 publications

References 44 publications

The Bio Economic Seaweed Model (BESeM) for modelling tropical seaweed cultivation – experimentation and modelling

The Bio Economic Seaweed Model (BESeM) for modelling tropical seaweed cultivation – experimentation and modelling

Characteristics of seaweed caraginan Kappaphycus alvarezii on cultivation system with different seed weight

Valorization of the chemical diversity of the tropical red seaweeds Acanthophora and Kappaphycus and their applications in aquaculture: A review

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