Seaweeds and Their Uses

Chapman, V. J.

doi:10.1097/00010694-195212000-00015

Cited by 43 publications

(48 citation statements)

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“…Another possibility is that there is a seasonal fluctuation in some features of the habitat to which the inversion polymorphism is responding. There are certainly variations in temperature, humidity and salinity of seaweed deposits, and seasonal changes in several chemical constituents of seaweeds (e.g., mannitol, alginic acid, laminarin) have been described (Black, 1948(Black, , 1951a lb-see also the review by Chapman and Chapman, 1980). Whatever the cause of the apparent fluctuations in inversion frequencies, the finding that it is consistent in widely spaced populations is compelling evidence for the action of natural selection.…”

Section: Discussionmentioning

confidence: 99%

Genetic variation at the alcohol dehydrogenase locus in natural populations of the seaweed fly, Coelopa frigida

et al. 1982

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SUMMARYSamples of the seaweed fly, Coelopa frigida, from six populations widely spaced around the English coast were collected during 1974-76 and again in 1979-80. Gene frequencies at the Alcohol dehydrogenase (Ad/i) locus were found not to vary significantly between sites, nor over the five year period of their study. Genotype distributions are compared with Hardy-Weinberg expectations and show consistent, mostly significant, differences.These results are interpreted in the light of an association between the Adh locus and a chromosomal inversion polymorphism. It is argued that the remarkable geographical uniformity must indicate the presence of strong selection, probably taking the form of heterokaryotypic advantage.

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Section: Discussionmentioning

confidence: 99%

Genetic variation at the alcohol dehydrogenase locus in natural populations of the seaweed fly, Coelopa frigida

et al. 1982

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“…Extract obtained was evaporated by using a rotary evaporator (Eyela type) to get dried methanol extract. The methanol extract was added with HCL 0.1 N to reach pH 2.5 and partitioned with ethyl acetate to yield ethyl acetate extract containing plant growth stimulators (PGR) of cytokinins and gibberelins derivative (Chapman & Chapman, 1980). Ethyl acetate extract resulted was then evaporated until reach 1 mL ethyl acetate extract equivalent to 100 g fresh weight.…”

Section: Seaweed Extract Preparationmentioning

confidence: 99%

IN VITRO GROWTH RATE OF Kappaphycus alvarezii MICROPROPAGULE AND EMBRYO BY ENRICHMENT MEDIUM WITH SEAWEED EXTRACT

Suryati

Rosmiati

Parenrengi

et al. 2015

Indonesian Aquaculture Journal

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The development of micropropagule and embryo of seaweed depend on nutrient and fertilizer used. Seaweed has been reported contain hormone regulators such as auxine, cytokinine, gibbereline, and various minerals applied in stimulating the growth ocra plant and wheat culture. The objectives of this study were to determine the potential of Kappaphycus alvarezii extract and its optimal concentration in accelerating of Kappaphycus alvarezii micropropagule and embryo growth. Micropropagule and embryo produced through callus induction were planted into PES 1/20 liquid medium supplemented with seaweed extract at the concentrations of 0 (control), 25, 50, 75, and 100 μL in 10 mL of medium. The results showed that medium enrichment with 50 μL of seaweed extract had the highest survival rate and growth of thallus. In addition, this concentration was also resulted in a good performance of K. alvarezii thallus with the lighter color. The advantage of this study for seaweed cultivation in Indonesia, among others, seaweed can be used as fertilizer, especially in the maintenance of seaweed seed, so that cultivation can be better develop.

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“…Meanwhile, Istini & Zatnika showed that yield of carragenan can be enhanced by the enhancement of KOH concentration used in the process. Chapman & Chapman (1980) explained that the climate, method of extraction, harvesting time, and location of the cultivation influence the amount of yield. In addition, the water content also gives significant effect to yield, as higher water content would lead to heavier product produced in the process.…”

Section: Yieldmentioning

confidence: 99%

The Quality of Alkali Treated Cottonii (ATC) Made from Eucheuma cottonii Collected from Different Regions In Indonesia

darmawan

Utomo

Mulia

2013

Squalen Bull. Marine Fisheries Postharvest Biotech.

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The presented study has been carried out in order to study the quality of Alkali Treated Cottonii (ATC) made from Eucheuma cottonii which being collected from different regions in Indonesia (Belitung, Nusa Tenggara Barat and Lampung). The quality variables analyzed were the characteristics of raw materials (Clean anhydrous weed and impurities) and the characteristics of ATC produced (moisture content, ash content, acid insoluble ash content, yield, gel strength, sulphate content, gelling -melting point). The analysis was done in 3 replicates and the data were statistically analyzed using SPSS 15 package software. Results indicated that the raw material from Lampung had a better quality than those from Nusa Tenggara Barat and Belitung. In addition, the characteristics of ATC produced from these three raw materials showed that seaweed from Lampung produced better quality ATC than those from Nusa Tenggara Barat and Belitung in terms of their gel strength, sulphate content and yield. Keywords: alkali treated cottonii (ATC), Eucheuma cottonii, quality ABSTRAK Penelitian mengenai pembuatan Alkali Tretated Cottonii (ATC) dari rumput laut Eucheuma cottoniii dari beberapa wilayah di Indonesia (Belitung, Nusa Tenggara Barat, dan Lampung) telah dilaksanakan dalam rangka mengetahui kualitas ATC yang dibuat. Pengamatan dilakukan terhadap karakteristik bahan baku rumput laut (Clean anhydrous weed dan impurities) serta karakteristik ATC yang dihasilkan (kadar air, kadar abu, kadar abu tak larut asam, rendemen, kekuatan gel, kadar sulfat dan titik jendal dan titik leleh). Analisa dilakukan dengan 3 kali ulangan dan datanya dianalisa menggunakan paket program (software) SPSS 15. Hasil penelitian menunjukkan bahwa bahan baku yang berasal dari Lampung memiliki kualitas yang lebih baik dibandingkan dengan bahan baku yang berasal dari Nusa Tenggara Barat dan Belitung. Demikian pula dengan hasil karakterissasi ATC yang dihasilkan. ATC yang dihasilkan dari rumput laut yang berasal dari Lampung memiliki mutu paling baik terutama dari segi kekuatan gel, kadar sulfat, dan rendemen yang dihasilkan.

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Seaweeds and Their Uses

Cited by 43 publications

References 0 publications

Genetic variation at the alcohol dehydrogenase locus in natural populations of the seaweed fly, Coelopa frigida

Genetic variation at the alcohol dehydrogenase locus in natural populations of the seaweed fly, Coelopa frigida

IN VITRO GROWTH RATE OF Kappaphycus alvarezii MICROPROPAGULE AND EMBRYO BY ENRICHMENT MEDIUM WITH SEAWEED EXTRACT

The Quality of Alkali Treated Cottonii (ATC) Made from Eucheuma cottonii Collected from Different Regions In Indonesia

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