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3 edition of On the occurrence of growth inhibiting substances in rye found in the catalog.

On the occurrence of growth inhibiting substances in rye

Geert Willem Wieringa

On the occurrence of growth inhibiting substances in rye

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  • 23 Currently reading

Published by Institute for Storage and Processing of Agricultural Produce in Wageningen [Netherlands] .
Written in English

    Subjects:
  • Rye.,
  • Plant growth inhibiting substances.

  • Edition Notes

    Statementby G. W. Wieringa.
    SeriesInstitute for Storage and Processing of Agricultural Produce. Publication 156
    Classifications
    LC ClassificationsSB191.R9 W63 1967b
    The Physical Object
    Pagination68 p.
    Number of Pages68
    ID Numbers
    Open LibraryOL4367980M
    LC Control Number78490883

    Sourdough is a stable culture of lactic acid bacteria and yeast in a mixture of flour and y speaking, the yeast produces gas (carbon dioxide) which leavens the dough, and the lactic acid bacteria produce lactic acid, which contributes flavor in the form of lactic acid bacteria metabolize sugars that the yeast cannot, while the yeast metabolizes the by-products of. Occurrence, effects and methods for antibiotics and illicit drugs in the environment Tammy Jones-Lepp Research Chemist U.S. Environmental Protection Agency Office of Research and Development National Exposure Research Laboratory – Environmental Sciences Division Las Vegas, NV USA Fax


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On the occurrence of growth inhibiting substances in rye by Geert Willem Wieringa Download PDF EPUB FB2

A series of experiments identified the growth - inhibitory substance in rye as a mixture of 5-n-alkyl resorcinols with odd-numbered side chains of 15 to 23 C atoms and of smaller amounts of 5-alkenyl resoreinols.

A method for the chemical analysis of these compounds was developed and it was established that they were localized in the by: On the occurrence of growth inhibiting substances in rye: Author(s) Wieringa, G.W.

Source: The cause of the decreased food intake and lower growth rate of animals fed on rye was investigated. With rats it was proved that the causative agent was soluble in petroleum ether and acetone.

The growth inhibitor was identified as a mixture of 5 Cited by: Enter the password to open this PDF file: Cancel OK. File name:. On the occurrence of growth inhibiting substances in rye. By G.W. Wieringa. Download PDF (2 MB) Abstract. The cause of the decreased food intake and lower growth rate of animals fed on rye was investigated.

With rats it was proved that the causative agent was Author: G.W. Wieringa. Recent work has suggested that the dormancy shown by the seeds and buds of many temperate zone plants may be due to the action of specific growth-inhibiting substances The experiments described were designed to test this hypothesis, with particular reference to apple seeds which will not germinate until they have been after-ripened at a temperature just above freezing point Cited by: IN an investigation of the growth- and inhibiting-substances in the potato tuber in relation to its rest period, Hemberg1 has shown that potato peelings contain an acid and a neutral growth.

Wieringa, G.W. () On the occurrence of growth inhibiting substances in rye. Publ.Institute for storage and processing of agricultural produce, Wageningen, The Netherlands. Hormone On the occurrence of growth inhibiting substances in rye book Hormone - Growth inhibitors: Growth inhibitors of various types have been identified in plants.

The best characterized one is abscisic acid, which is chemically related to the cytokinins. It is probably universally distributed in higher plants and has a variety of actions; for example, it promotes abscission (leaf fall), the development of dormancy in buds, and the formation of.

The purpose of this chapter is to acquaint the reader with the chemical structures of various plant growth regulators and reports of their detection from plant On the occurrence of growth inhibiting substances in rye book. In general only plant growth substances from higher plants are considered.

Growth substances from algae have been recently reviewed by A ugier (see A ugier, ). Inhibiting Microbial Growth. By Jennifer Stearns, Michael Surette. The terminology used to describe methods for reducing or removing microbes from a surface can sometimes be confusing.

There are different reasons for wanting to get rid of microbes. A role for growth substances as integrating agents is suggested and the notion of quantitative tissue sensitivity variation is developed to explain the major growth patterns of developing shoots. View. Rye and wheat differ from each other not only in the amount of alk(en)yl resorcinols [ ] but also in unsaturation.

In rye grains, about 5-times higher concentrations of alkenyl resorcinols were found than in wheat [17]. The average chain length of rye alk(en)yl resorcinols is.

Tianjin, located in Bohai Bay, China, constitutes a relevant study area to investigate emerging per- and polyfluoroalkyl substances (PFASs) due to its high population density, clustering of chemical and aircraft industries, as well as international airports, harbors, and oil rigs.

In this study, 53 anionic, zwitterionic, and cationic PFASs were monitored in river surface water, groundwater. Plant Growth Inhibitors Abscisic acid. It is a growth inhibitor, which was discovered in the s.

It was initially called dormant. Later, another compound abscisin-II was discovered and are commonly called as abscisic acid. This growth inhibitor is synthesized within the stem, leaves, fruits, and seeds of the plant.

The effect of modified atmosphere packaging (MAP) on the most important spoilage fungi of bread was investigated. Penicillium commune, P.

roqueforti, Aspergillus flavus and Endomyces fibuliger were able to grow at oxygen levels down to %, while the chalk mould E. fibuliger was capable of growing even in the presence of an oxygen absorber.

High levels of carbon dioxide retarded growth. Chromatographic separation of the inhibiting substances revealed that one of the inhibitory zones of the chromatograms had properties of the so‐called inhibitor β. Neither abscisic acid (ABA) nor lunularic acid proved to be responsible for the growth‐inhibiting property of this zone.

The physiological and molecular mechanisms of tolerance to osmotic and ionic components of salinity stress are reviewed at the cellular, organ, and whole-plant level.

Plant growth responds to salinity in two phases: a rapid, osmotic phase that inhibits Read More. Full Text HTML; Download PDF. Gibberellins stimulate growth, especially elongation of the stem, and can also end the dormancy period of seeds and buds by encouraging germination.

Additionally, gibberellins play a role in root growth and differentiation, and produce an enzyme that pro motes the conversion of an embryo's starchy food supply into utilizable sugars.

time the use of plant growth substances is in its infancy stage of development. This becomes quite evident when reviewing the literature in the area of plant growth regulating compounds where one can find that a given class of plant growth substances promotes, inhibits, or otherwise has no effect on a specific plant process.

Reproductive growth- After the vegetative growth, plants produce flowers which is the reproductive part of the plant. This is called reproductive growth/phase. Growth curve – It is an ‘S’ shaped curve obtained when we plot growth against time (Fig.

It is also called ‘sigmoid ‘ curve mainly shows four phases. Mycotoxins are toxic substances that can infect many foods with carcinogenic, genotoxic, teratogenic, nephrotoxic, and hepatotoxic effects.

Mycotoxin contamination of foodstuffs causes diseases worldwide. The major classes of mycotoxins that are of the greatest agroeconomic importance are aflatoxins, ochratoxins, fumonisins, trichothecenes, emerging Fusarium mycotoxins, enniatins, ergot.

Allelopathy is a biological process involving one plant completely stopping the growth of a neighboring plant in order to further its own growth. Why and How Allelopathy Occurs Allelopathy is a survival mechanism that allows certain plants to compete with and often destroy nearby plants by inhibiting seed sprouting, root development, or.

as rye has resulted in the greatest application of allelopathy occurrence, growth, plant succession, the structure of plant that inhibit the growth of many plants. Ailanthone, isolated. The Action of Some Chemical Growth Inhibitors on jects, to determine how many out of 58 different substances had the capacity to inhibit tumor growth when applied at a standard concentration.

Second, compounds found to be active by this test were retested over a suitable range of concen trations to determine their degree of activity. specific traumatic tropic inhibiting substances, as well as described by Nielsen () and Miss Seubert's () as growth-inhibiting substances.

As I said above, these results must be interpreted differently. A very nice pair statement for the declaration of tropism curvatures was done by Dolk (); given by showing, at the very moment. When grown in culture, a predictable pattern of growth in a bacterial population occurs. This pattern can be graphically represented as the number of living cells in a population over time and is known as a bacterial growth curve.

Bacterial growth cycles in a growth curve consist of four phases: lag, exponential (log), stationary, and death. Black walnut is a prime example of this.

In addition to its leaves, black walnut trees store allelopathic properties within their buds, nut hulls, and roots. The chemical responsible for its toxicity, called Juglone, remains in the soil around the tree and is most potent at the drip line, though the roots can spread out well beyond this.

The growth inhibitory effects of compounds (1)–(4) on HT (colon) and BT (breast) cancer cell lines were evaluated. Cells were seeded at 4 × 10 3 cells per well and incubated for 24 h.

The cells were then treated by % DMSO (as solvent control) or various concentrations of compounds (as treatment group) and incubated at 37 °C for.

To secure their access to water, light, and nutrients, many plant species have developed allelopathic strategies to suppress competitors. To this end, they release into the rhizosphere phytotoxic substances that inhibit the germination and growth of neighbors.

Despite the importance of allelopathy in shaping natural plant communities and for agricultural production, the underlying molecular. Some filamentous fungi are able to grow in food and produce toxic metabolites.

It occurs mainly in grains, cereals, oilseeds and some by-products. The growth of fungi in a particular food is governed largely by a series of physical and chemical parameters. The production of toxic metabolites is not confined to a single group of molds irrespective of whether they are grouped according to.

Rye cover crop in winter Cut and tilled in. Symbiotic Nitrogen Fixation • Allelopathy—the release of plant growth–inhibiting substances • Increased weed occurrence • Allelopathic effects. Summary • Cover crops help develop a functional garden ecosystem.

Plant growth substances have key role in different physiological processes related to growth and development of crops. It is obvious that changes in the level of endogenous hormones due to biotic and abiotic stress alter the crop growth and any sort of manipulation including exogenous application of growth substances would help for.

The optimum growth pH is the most favorable pH for the growth of an organism. The lowest pH value that an organism can tolerate is called the minimum growth pH and the highest pH is the maximum growth values can cover a wide range, which is important for the preservation of food and to microorganisms’ survival in the stomach.

Allelopathy is a biological phenomenon by which an organism produces one or more biochemicals that influence the germination, growth, survival, and reproduction of other organisms. These biochemicals are known as allelochemicals and can have beneficial (positive allelopathy) or detrimental (negative allelopathy) effects on the target organisms and the community.

PubMed:Growth inhibiting activity of lipophilic extracts from Dipsacus sylvestris Huds. roots against Borrelia burgdorferi s. in vitro. PubMed:An improved formal approach to demographic loop analysis. PubMed:Surveys of microfungi in a former industrial area in Duisburg-Nord.

Müllerian inhibiting substance (MIS) is a member of the transforming growth factor β family of growth and differentiation factors and is primarily known for its role in regulating in utero sexual differentiation of boys ().In girls, MIS is secreted by the ovaries beginning during the prepubertal period ().Serum levels remain elevated during women's reproductive years but decline gradually.

Zone of Inhibition Testing is a fast, qualitative means to measure the ability of an antimicrobial agent to inhibit the growth of microorganisms. In the world of antimicrobial substances/surfaces, the degree to which these materials are inhibitory can be of vital importance to the health of the consumer.

inhibitor from radish which appear in less than one hour (fig. STARK (9), NIELSEN (3), and SEUBERT (7) as early as I92i report-ed positive curvatures, but these were probably not caused by growth inhibiting substances as these investigators stated, but by the unequal production of auxin on the two sides of the top of the de.

Isolation and Identification of Plant Growth Inhibitors from Leaves of the American Cranberry (Vaccinium macrocarpon) Peter Wepplo Chap DOI: /bkch Publication Date (Print): January 8,   In recent years, people have been exposed to several types of substances with broad spectrum due to the rapidly evolving technology.

One of these chemical substance groups are pesticides. Pesticides have been an essential part of agriculture to protect crops and livestock from pest infestations and yield reduction for many decades. Despite their usefulness, pesticides could pose. Anti-Müllerian hormone (AMH) is member of the transforming growth factor-β superfamily of growth factors (Cate et al., ).

AMH expression is limited to testicular Sertoli cells and ovarian granulosa cells and occurs in a developmentally regulated, sexually dimorphic pattern.Phenyllactic acid (PLA) has recently been found in cultures of Lactobacillus plantarum that show antifungal activity in sourdough breads.

The fungicidal activity of PLA and growth inhibition by PLA were evaluated by using a microdilution test and 23 fungal strains belonging to 14 species of Aspergillus, Penicillium, and Fusarium that were isolated from bakery products, flours, or cereals.an organic substance produced in small amounts and transported to sites where it controls growth and development processes.

Plant growth regulator. see plant hormone. a chemical sub stance slowing or inhibiting plant growth. Herbicides. any chemical that, when applied to a plant, inhibits growth .