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  • 1
    ISSN: 0168-9452
    Keywords: abscisic acid ; cell wall ; embryonic axes
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Plant molecular biology 9 (1987), S. 227-235 
    ISSN: 1573-5028
    Keywords: malate synthase cDNA ; castor bean ; transcription ; gibberellic acid ; abscisic acid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Several clones complementary to malate synthase mRNA have been identified in a complementary-DNA library to mRNA from castor bean endosperm. One of these clones has been used as a probe to measure levels of transcripts during seed germination and the effects of gibberellic acid and abscisic acid on these levels have been examined. Malate synthase transcripts increased during germination and GA3 advanced their appearance in the endosperm. Exogenously applied ABA inhibited the accumulation of transcripts over a time course of germination but the addition of GA3 counteracted its inhibitory effects. The data confirmed previous reports which indicated that the action of both growth regulators was on transcript accumulation and that there is a coordinated induction of the enzymes involved in the lipid metabolism in oil seeds.
    Type of Medium: Electronic Resource
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  • 3
    Publication Date: 2021-05-19
    Description: Se valoró el uso de diferentes combinaciones de preservantes químicos en la elaboración de un producto untable no fermentado, con vistas a incrementar el tiempo de vida útil del mismo. Los preservantes utilizados fueron sorbato de potasio, ácido benzoico y ácido sórbico, estableciéndose las combinaciones posibles de dos conservantes, que no superara 0,1 % por combinación en el producto final. Se determinó el tiempo de vida útil del untable elaborado con cada combinación, mantenidos a 6 ± 2 ºC. El estudio se realizó siguiendo un diseño de muestreo parcialmente escalonado y tomando como rechazo la modificación de los atributos de calidades físico-químicas, microbiológicas y sensoriales. Se precisó que con las 3 combinaciones estudiadas se incrementó la durabilidad del untable no fermentado elaborado en el país (28 días) en más de un mes y la mejor combinación fue: sorbato de potasio: ácido benzoico (0,05 %: 0,05 %) con la que se alcanzó una durabilidad de 10 semanas, considerando 20 % de muestras rechazadas y tomando el valor medio del percentil. Durante el tiempo de conservación no se detectaron cambios físico- químicos ni sensoriales; el rechazo de las muestras se debió al deterioro de su calidad microbiológica.
    Description: The use of different combinations of chemical preservers was valued in the elaboration of a not fermented spreadable product, with the objective to increasing the time of useful life of the same one. The utilized preservers were potassium sorbate, benzoic acid and the sorbic acid settling down the combinations possible of two preservers that didn’t overcome 0.1% for combination in the end product. The time of useful life of each spreadable product elaborated was determined at the temperature of 6 ± 2 ºC. The study was carried out following a design of partially stepped sampling and taking like rejection the modification of the physical-chemical, microbiologic and sensorial attributes of quality. It was established that with the 3 studied combinations, the durability of the not fermented spreadable, elaborated in the country (28 days), was increased in more than one month and the best combination was: potassium sorbate: benzoic acid (0.05%: 0.05%) with a durability of 10 weeks, considering 20% of rejected samples and taking the mean value of the percentile. During the time of conservation neither physical-chemical nor sensorial changes were detected; the rejection of the samples was due to the deterioration of its microbiologic quality.
    Description: Published
    Description: spreads
    Description: potassium sorbate
    Keywords: Benzoic acid ; Sorbic acid ; Sorbates ; Shelf life ; Preservatives
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
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