Algal growth control by a barley straw extract

Ball, Andrew S.; Williams, Matthew; Vincent, David; Robinson, Jim

doi:10.1016/s0960-8524(00)00148-6

Cited by 104 publications

(69 citation statements)

References 12 publications

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“…Consequently, this will negatively affect cell division as there will be no substrate for energy processes and biomolecules synthesis that maintain life processes of the cell. Similar to our results, Ball et al (2001) and Park et al (2006b) demonstrated that barley and rice straw inhibited microalgal growth, by limiting germination and normal cell metabolism.…”

Section: Discussionsupporting

confidence: 91%

Algicidal effects of aqueous leaf extracts of neem (Azadirachta indica) on Scenedesmus quadricauda (Turp.) de Brébission

et al. 2016

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The application of synthetic algaecides for the control of algae produces by-products that are sometimes toxic to the environment. There is a need for natural and cheap alternatives to synthetic algaecides. In the present study, we investigated the potential of aqueous crude extract of Azadirachta indica to inhibit the growth of Scenedesmus quadricauda. Phytochemical screening of the extract revealed the presence of groups of bioactive compounds that are capable of inhibiting microalgal growth. Chlorophyll a concentration, dry weight production and cell density of microalga decreased with increasing crude extract concentration. After three days of exposure, the 1000 mg/L extract concentration resulted in complete growth inhibition and cell lysis. Furthermore, the ability of S. quadricauda to form multi-celled coenobial structures was compromised in a concentration dependent manner. In general, catalase and peroxidase activities of the microalga were upregulated with increasing extract concentration. These results imply that aqueous neem extract may provide a cheap and ecofriendly alternative for the control of microalgae in aquatic ecosystems.

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Section: Discussionsupporting

confidence: 91%

Algicidal effects of aqueous leaf extracts of neem (Azadirachta indica) on Scenedesmus quadricauda (Turp.) de Brébission

et al. 2016

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“…Recent years have seen many studies relating to the isolation and identification of allelochemicals from aquatic plants [5][6][7][8], while the algicidal properties of terrestrial plants still get less attention [9]. Up to now, the extracts of many terrestrial plants also show inhibitory effects against cyanobacteria, such as barley straw [10][11][12][13], Chinese traditional medicines [9,14,15], and so on.Pomegranate (Punicagranatum), belonging to the family Punicaceae [16], is one of the oldest edible fruits. It has been cultivated extensively in Mediterranean countries, Iran, India, and to some extent in the U.S. (California), China, Japan, and Russia [17].…”

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confidence: 99%

Composition of Ethyl Acetate Extracts from Three Plant Materials (Shaddock Peel, Pomegranate Peel, Pomegranate Seed) and Their Algicidal Activities

Wang¹,

Kang²,

Zhang³

et al. 2015

Pol. J. Environ. Stud.

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Eutrophication is a worldwide problem in aquatic ecosystems and cyanobacterial blooms can cause severe water quality deterioration due to toxin production, hypoxia, off-flavor problems that lead to illness in animals and humans [1][2][3]. Therefore, the removal of harmful cyanobacterial blooms is a crucial step for the maintenance of safe water supplies and for the safety of aquatic products [4]. Recent years have seen many studies relating to the isolation and identification of allelochemicals from aquatic plants [5][6][7][8], while the algicidal properties of terrestrial plants still get less attention [9]. Up to now, the extracts of many terrestrial plants also show inhibitory effects against cyanobacteria, such as barley straw [10][11][12][13], Chinese traditional medicines [9,14,15], and so on.Pomegranate (Punicagranatum), belonging to the family Punicaceae [16], is one of the oldest edible fruits. It has been cultivated extensively in Mediterranean countries, Iran, India, and to some extent in the U.S. (California), China, Japan, and Russia [17]. Pomegranate peels and seeds Pol. J. Environ. Stud. Vol. 24, No. 4 (2015), 1803-1807 AbstractMany studies have involved the isolation and identification of allelochemicals from aquatic plants, but the algicidal properties of terrestrial plants have received less attention. This study aims to identify allelochemicals of ethyl acetate extracts from three plant materials (shaddock peel, pomegranate peel, pomegranate seed) and to investigate their inhibitory effects on Microcystis aeruginosa. The ethyl acetate extracts of the three plant materials were identified by GC-MS. Finally, 19 kinds of compounds (including organic acids, ester, ketone, sterol, etc.) were obtained and eight kinds of organic acids and N-phenyl-2-Naphthalenamine were proved to be allelochemicals. The inhibitory effects of the ethyl acetate extracts were also explored by M. aeruginosa bioassay. This showed that the inhibition percentages of ethyl acetate extracts of the three plant materials on the growth of M. aeruginosa were 43.9%, 47.5%, and 40.3%, respectively, when the algae were treated at a dosage of 20 mg/L extracts.Keywords: allelopathic effect, shaddock peel, pomegranate peel, pomegranate seed, Microcystis aeruginosa *e-mail: zhanglieyu@163.com **e-mail: shpcheng@foxmail.com DOI: 10.15244/pjoes/36986 as a byproduct of pomegranate processing are about 26-30%, 20% (w/w) of the whole fruit weight, respectively [18,19], and are a good source of secondary products such as tannins, organic acid, polyphenol, and alkaloids [20][21][22]. Shaddock, like other citrus fruits, has a small edible portion and large amounts of waste materials such as peels and seeds, and peels contain considerable phenolic compounds [23]. At present, the polyphenols have shown significant inhibition to the growth of harmful algae. Therefore, these previous results indicate that the shaddock peel, pomegranate peel, and pomegranate seed could be used as an algicide.The objectives of this study are to identify the alle...

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“…In addition to aquatic macrophytes, a small number of terrestrial plants also exhibited allelopathic effects on algae. The presence of decomposing barley straw (Ball et al 2001) and Lantana camara (Kong et al 2006) reduced the growth of some algal species under field or laboratory conditions. Compared with other terrestrial plants and aquatic macrophytes, woody plants with a wide range of raw material sources may more easily produce a larger amount of allelochemicals (Pohjamo et al 2003), but little work has been done in using woody plants to control algae bloom.…”

Section: Introductionmentioning

confidence: 99%