Results 161 to 170 of about 1,120 (175)
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Current Organic Chemistry, 2015
Many algal extracts or algal bioactive ingredients have potential in suppressing cancer or different biological mechanisms. We previously found that aqueous extracts of Gracilaria tenuistipitata (AEGT) contained abundant antioxidants with protective effects against several reactive oxygen species (ROS) related ...
Chi-Chen Yeh +6 more
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Many algal extracts or algal bioactive ingredients have potential in suppressing cancer or different biological mechanisms. We previously found that aqueous extracts of Gracilaria tenuistipitata (AEGT) contained abundant antioxidants with protective effects against several reactive oxygen species (ROS) related ...
Chi-Chen Yeh +6 more
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Effect of inorganic carbon supply on the photosynthetic physiology of Gracilaria tenuistipitata
Planta, 1994Gracilaria tenuistipitata Zhang et Xia was cultured for 15 d at low, normal and high inorganic carbon concentrations under constant light, temperature and nutrient conditons. Carbonic anhydrase (CA; EC 4.2.1.1.) activity, ribulose-1,5-bisphosphate carboxylase/ oxygenase (Rubisco; EC 4.1.1.39) content, pigment content and C/N ratio were measured, and ...
Mar�aJ. Garc�a-S�nchez +2 more
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Responses of the macroalga Gracilaria tenuistipitata var. liui (Rhodophyta) to iron stress
Journal of Applied Phycology, 2000Chlorophyll (Chl), phycoerythrin (PE), total nitrogen (TN% dw) and Fein tissues were measured in Fe-deficient cultures of Gracilariatenuistipitata var. liui over a period of 60 days. 55Fe uptakeand photosynthetic carbon fixation (NaH14CO3) werecompared in Fe-rich and Fe-deficient cultures and analyzed the effects ofFe-deficiency on the ultrastructure ...
Jingwen Liu +3 more
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Plant Science, 2002
The red macroalga Gracilaria tenuistipitata has a plasma membrane redox system easily assayed as a ferricyanide reductase (EC 1.6.99.13) activity. This activity is associated with acidification of the medium and is modulated by light conditions. G. tenuistipitata thalli adapt to light conditions by changes affecting their morphology, physiology and ...
Esther Melgarejo +3 more
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The red macroalga Gracilaria tenuistipitata has a plasma membrane redox system easily assayed as a ferricyanide reductase (EC 1.6.99.13) activity. This activity is associated with acidification of the medium and is modulated by light conditions. G. tenuistipitata thalli adapt to light conditions by changes affecting their morphology, physiology and ...
Esther Melgarejo +3 more
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Planta, 1992
The mechanism of inorganic-carbon (Ci) accumulation in the red seaweed Gracilaria tenuistipitata Zhang et Xia has been investigated. Extracellular and intracellular carbonic-anhydrase (CA) activities have been detected. Photosynthetic O2 evolution in thalli and protoplasts of G.
Haglund, K +4 more
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The mechanism of inorganic-carbon (Ci) accumulation in the red seaweed Gracilaria tenuistipitata Zhang et Xia has been investigated. Extracellular and intracellular carbonic-anhydrase (CA) activities have been detected. Photosynthetic O2 evolution in thalli and protoplasts of G.
Haglund, K +4 more
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Journal of Applied Phycology, 2012
Gracilaria edulis and Gracilaria tenuistipitata var liui are agarophytes with high commercial value which are currently cultivated in countries like India and Thailand. They have great potential for mariculture in Malaysia. Experiments were carried out to study carpospore germination and determine the effects of irradiance and salinity on the growth of
Chew-Hock Yu +2 more
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Gracilaria edulis and Gracilaria tenuistipitata var liui are agarophytes with high commercial value which are currently cultivated in countries like India and Thailand. They have great potential for mariculture in Malaysia. Experiments were carried out to study carpospore germination and determine the effects of irradiance and salinity on the growth of
Chew-Hock Yu +2 more
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Journal of Applied Phycology, 2018
The red seaweeds are generally known to have a high content of polysaccharides and low content of lignin. They can be used as a bioethanol feedstock and to produce biochemicals. This study was conducted to examine the pretreatment conditions to improve the production of fermentable sugars and by-products from Gracilaria fisheri and Gracilaria ...
Nattawarit Nunraksa +3 more
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The red seaweeds are generally known to have a high content of polysaccharides and low content of lignin. They can be used as a bioethanol feedstock and to produce biochemicals. This study was conducted to examine the pretreatment conditions to improve the production of fermentable sugars and by-products from Gracilaria fisheri and Gracilaria ...
Nattawarit Nunraksa +3 more
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Phycological Research, 2004
SUMMARY The effects of auxins and cytokinin on callus formation, growth and regeneration of Gracilaria tenuistipitata Chang et Xia and G. perplexa Byrne et Zuccarello (Gracilariales, Rhodophyta) are reported. Plant growth regulators (PGR) in concentrations ranging from 0.1 to 100.0 μmol of indole-3-acetic acid, 2,4-dichlorophenoxyacetic acid (2,4-D),
Nair S. Yokoya +2 more
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SUMMARY The effects of auxins and cytokinin on callus formation, growth and regeneration of Gracilaria tenuistipitata Chang et Xia and G. perplexa Byrne et Zuccarello (Gracilariales, Rhodophyta) are reported. Plant growth regulators (PGR) in concentrations ranging from 0.1 to 100.0 μmol of indole-3-acetic acid, 2,4-dichlorophenoxyacetic acid (2,4-D),
Nair S. Yokoya +2 more
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Food Hydrocolloids, 2015
Physico-chemical and gelling properties of agar extracted from Gracilaria tenuistipitata as affected by alkaline pretreatments using NaOH and KOH at various levels (3–7%, w/v) were investigated. Yield of native agar was 17.1%, whilst those of agars pretreated with NaOH and KOH ranged from 23.6% to 26.1%. Agar with alkaline pretreatment generally showed
Suthasinee, Yarnpakdee +2 more
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Physico-chemical and gelling properties of agar extracted from Gracilaria tenuistipitata as affected by alkaline pretreatments using NaOH and KOH at various levels (3–7%, w/v) were investigated. Yield of native agar was 17.1%, whilst those of agars pretreated with NaOH and KOH ranged from 23.6% to 26.1%. Agar with alkaline pretreatment generally showed
Suthasinee, Yarnpakdee +2 more
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Journal of Applied Phycology, 2018
Epiphytism is a common phenomenon in seaweeds that can be observed in natural populations and under culture conditions. Epiphytes are generally attached superficially to the surface of the host. Some epiphytic species can penetrate into the tissue of the host, affecting its growth and productivity.
Anong Chirapart +3 more
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Epiphytism is a common phenomenon in seaweeds that can be observed in natural populations and under culture conditions. Epiphytes are generally attached superficially to the surface of the host. Some epiphytic species can penetrate into the tissue of the host, affecting its growth and productivity.
Anong Chirapart +3 more
openaire +1 more source