The seaweed hydrocolloid industry: 2016 updates, requirements, and outlook

Porse, Hans; Rudolph, Brian

doi:10.1007/s10811-017-1144-0

Cited by 261 publications

(132 citation statements)

References 20 publications

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“…However, rapid application of algal biomass is possible not always, but storage of the algal biomass results in emission of odors and release of a liquefied fraction (Michalak et al 2013). Seaweed processing is focused mainly on hydrocolloids production which is large scale and growing industry (Porse et al 2017), however seaweeds treatment plant in Latvia ("Nakotne", Dobele) was closed in early nineties (Grickus et al 2013). One of the reasons for it was extreme decrease of red algae Furcellaria lumbricalis habitat in Latvia coastal zone after the oil spill from tanker in 1979 near Ventspils and in 1981 near Klaipeda (Korolev et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Development of the Approaches for Complex Utilization of Brown Algae (Fucus Vesiculosus) Biomass for the Obtaining of Value-Added Products

Bikovens

Ponomarenko

Janceva

et al. 2018

Proccedings of International Scientific Conference "RURAL DEVELOPMENT 2017"

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The seaweed collected after stranding on beaches of Latvia is underexploited natural resource, which has a potential as raw material for biologically active compound extraction for cosmetic and pharmacy and fertilizer in sustainable agriculture. The aim of the present study was development of the approach for the processing of brown alga Fucus vesiculosus biomass, collected from the Gulf of Riga. The thorough characterization of the chemical composition of Fucus vesiculosus has shown that it is a potential source for obtaining of nitrogen-containing fertilizers, and biologically active compounds. One of the proposed approaches for the processing of the Fucus vesiculosus biomass under study includes algae extraction with organic solvents and CaCl2 solution and obtaining soil organic amendment on the basis of the extract-free residue. The ethyl acetate extract was rich in phenolic compounds (430 ± 30 GAE mg/g) with high antioxidant activity in DPPH• and ABTS•+ tests. The ethanol extract contained significant amounts of phlorotannins that was confirmed by the data of LC-MS/MS analysis. The CaCl2 extract was used for the obtaining of sulphated polysaccharide fucoidane (yield ≈7% on the basis of oven dry matter, o.d.m.), which has numerous biological activities. The extract-free residue didn’t show phytotoxicity. The extract free algal biomass exhibited positive effect in root elongation tests with oat (Avena sativa). As alternative approach for processing of the algal biomass, the mechano-chemical treatment of algal biomass with lignin was proposed. EPR analyses confirmed interaction between algal biomass and lignin.

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Section: Introductionmentioning

confidence: 99%

Development of the Approaches for Complex Utilization of Brown Algae (Fucus Vesiculosus) Biomass for the Obtaining of Value-Added Products

Bikovens

Ponomarenko

Janceva

et al. 2018

Proccedings of International Scientific Conference "RURAL DEVELOPMENT 2017"

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“…Hugh (1991) reported 1400 t of dry weight harvested over a wide area, including the southern coast of Java, the islands between Java and Timor, Sumatra, and several areas to the north and east of Timor. Porse and Rudolph (2017) reported the harvest of 4000 t and 3500 t (dry weight) of Gelidium in 2009 and 2015, respectively, in the set of countries of Japan, Korea, and Indonesia.…”

Section: Resultsmentioning

confidence: 99%

“…Even though the agar extracted from Gelidium presently represents only about 1.6% of the world phycocolloid production (Porse and Rudolph 2017), its natural high gelling strength and low gelling temperatures make it difficult to be replaced by agars extracted from other species. Higher grade, purified agars used in pharmacological, biomedical, biotechnological, and some other specific applications are extracted exclusively from Gelidium (Armisén 1991).…”

Section: Introductionmentioning

confidence: 99%

“…For detailed descriptions of harvest methods and cultivation attempts of Gelidium species around the world, see previous reports by Santelices (1988), Santos and Duarte (1991), Melo (1998), and McHugh (2003). More recently, Porse and Rudolph (2017) assessed the present situation of the seaweed hydrocolloid industry, comprising agar, alginate, and carrageenans.…”

Section: Introductionmentioning

confidence: 99%

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Global shortage of technical agars: back to basics (resource management)

Santos

Melo

2018

J Appl Phycol

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Bacteriological and technical agars are in short supply with potential consequences for research, public health, and clinical labs around the world. To diagnose bottlenecks and sustainability problems that may be putting the industry at risk, we analyzed the available time series for the global landings of Gelidium, the most important raw materials for the industry. Data on the harvest of Gelidium spp. have been reported since1912, when Japan was the only producer. After World War II the diversification of harvested species and producing countries resulted in a strong increase in global landings. Maximum harvest yields of almost 60,000 t year−1 in the 1960s were sustained until the 1980s, after which landings decreased continuously to the present. In the 2010s, a reduction in the global production to about 25,000 t year−1 was observed, which was lower than the yields of the 1950s. Landings by important producers such as Japan, Korea, Spain, and Portugal have collapsed. This is the ultimate cause of the present shortage of bacteriological and technical agars. However, an important factor at play is the concentration of the global landings of Gelidium in Morocco, as its relative contribution increased from 23% in the 1960s to the present 82%. Two specific bottlenecks were identified: restrictive export quotas of unprocessed Gelidium in favor of the national agar industry and resource management regulations that were apparently not enforced resulting in over-harvesting and resource decline. The global industry may well be dependent on resource management basics. Simple harvest statistics must be gathered such as the harvest effort and the variation of harvest yields along the harvest season. We discuss how this information is fundamental to manage the resource. The available harvest statistics are generally poor and limited and vary significantly among different sources of data. Probable confusions between dry and wet weight reporting and poor discrimination of the species harvested need to be resolved.

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“…On the other hand, agar is extracted from agarophytes such as Gelidium corneum and Gracilaria spp., while carrageenan is produced mainly from carrageenophytes such as Kappaphycus alvarezii and Eucheuma denticulatum (Fleurence & Levine, 2016;Porse & Rudolph, 2017). The hottest research topics in the field of seaweed hydrocolloids are application of the resource management (Santos & Melo, 2018), and sustainable and green methods in seaweed cultivation and processing (Porse & Rudolph, 2017). Moreover, there is an interest in production of bioactive polysaccharides from seaweeds, such as laminarin, a b-glucan obtained from brown algae (Kadam et al, 2015).…”

Section: Hydrocolloids From Seaweedmentioning

confidence: 99%

A review of current and future food applications of natural hydrocolloids

Yemenicioğlu

Farris

Türkyılmaz

et al. 2019

Int J of Food Sci Tech

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Summary The main aim of this review paper was to focus on current and potential future sources and food applications of natural hydrocolloids in the food industry. The emerging research trends, problems, new methods and alternative approaches in production, environmental concerns, market trends and newly discovered health benefits have been discussed for natural hydrocolloids of commercial relevance. The rheological and surface active properties, interactions, functional properties, films and coatings, encapsulation applications and nanotechnology uses of natural hydrocolloids have been discussed in the light of recent developments. This review also reflected the most up‐to‐date concepts of applying natural hydrocolloids to meet consumer's and food sector's sophisticated demands related to food products.

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The seaweed hydrocolloid industry: 2016 updates, requirements, and outlook

Cited by 261 publications

References 20 publications

Development of the Approaches for Complex Utilization of Brown Algae (Fucus Vesiculosus) Biomass for the Obtaining of Value-Added Products

Development of the Approaches for Complex Utilization of Brown Algae (Fucus Vesiculosus) Biomass for the Obtaining of Value-Added Products

Global shortage of technical agars: back to basics (resource management)

A review of current and future food applications of natural hydrocolloids

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