shelf-life

保质期
  • 文章类型: Journal Article
    无定形固体分散体(ASD)是提高水溶性差的化合物口服生物利用度的重要方法;然而,确保这些ASD在储存过程中不会发生显著程度的重结晶可能是耗时的。因此,已经进行了各种努力来用动力学模型预测ASD结晶水平。然而,由于晶体含量定量方法的限制和结晶动力学的复杂性,仅取得了有限的成功。为了提高预测精度,加速稳定性评估计划(ASAP),采用等转换(达到规格限制的时间)和改进的阿伦尼乌斯方法,在这里用于预测保质期建模。在目前的研究中,通过喷雾干燥灰黄霉素和HPMC-AS-LF制备模型ASD。这个ASD是在设计的温度组合下强调的,相对湿度和时间,设定条件以确保在低于ASD的玻璃化转变温度(Tg)下进行加压。开发了具有足够灵敏度的X射线粉末衍射(XRPD)晶体含量定量方法,并将其用于应力ASD。使用ASAPprime®的灰黄霉素ASD的结晶建模显示出与长期(40°C/75%RH)结晶度水平的良好一致性,并且支持使用这种类型的加速稳定性研究以进一步提高ASD货架期预测精度。
    Amorphous solid dispersions (ASDs) represent an important approach for enhancing oral bioavailability for poorly water soluble compounds; however, assuring that these ASDs do not recrystallize to a significant extent during storage can be time-consuming. Therefore, various efforts have been undertaken to predict ASD crystallization levels with kinetic models. However, only limited success has been achieved due to limits on crystal content quantification methods and the complexity of crystallization kinetics. To increase the prediction accuracy, the accelerated stability assessment program (ASAP), employing isoconversion (time to hit a specification limit) and a modified Arrhenius approach, are employed here for predictive shelf-life modeling. In the current study, a model ASD was prepared by spray drying griseofulvin and HPMC-AS-LF. This ASD was stressed under a designed combinations of temperature, relative humidity and time with the conditions set to ensure stressing was carried out below the glass transition temperature (Tg) of the ASD. Crystal content quantification method by X-ray powder diffraction (XRPD) with sufficient sensitivity was developed and employed for stressed ASD. Crystallization modeling of the griseofulvin ASD using ASAPprime® demonstrated good agreement with long-term (40 °C/75 %RH) crystallinity levels and support the use of this type of accelerated stability studies for further improving ASD shelf-life prediction accuracy.
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  • 文章类型: Journal Article
    普鲁士蓝不溶性(PB)是对th和铯的放射性和非放射性同位素进行脱孔的解毒剂。其剂型为胶囊形式,放心酶-Cs,是美国食品和药物管理局(USFDA)自2003年以来批准的配方。在印度和许多其他国家,这种药物不可用,如果需要,它是从美国或欧洲进口的。作者广泛致力于在印度制造PB胶囊。该药物最近被印度药品监管机构批准,中央药物标准控制组织(CDSCO),现已在印度上市。然而,这种药物需要特别注意,因为它是一种孤儿药物,需求有限。该药物的批准后阶段提出了一系列不同的挑战,作者强调了批准后产品管理的可能方法的一些关键问题。
    Prussian blue insoluble (PB) is an antidote for decorporation of radioactive and non-radioactive isotopes of thallium and cesium. Its dosage in the form of capsules, Radiogardase-Cs, is a United States Food and Drug Administration approved formulation since 2003. In India and many other countries, this drug is not available and in case of requirement it is imported from US or Europe. The author has worked extensively to make PB capsules available in India. The drug was recently approved by the Indian drug regulatory agency, Central Drugs Standard Control Organisation and is now available commercially in India. However this drug needs special attention as it is an orphan drug with limited requirement. The post-approval phase of this drug poses a different set of challenges and the author has highlighted some key issues with probable approaches for post-approval product management.
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  • 文章类型: Journal Article
    冷大气等离子体(CAP)技术产生的等离子体活化冰(PAI)对易腐新鲜海鱼(Sparusaurata)鱼片的微生物和质量特性的功效和适用性,进行了评估。用去离子水冰(对照)在储存过程中研究了鱼片的微生物负荷和质量特征的变化,PAI和来自H2O2浓度等于PAI的人工生产水(人工)的冰。将新鲜的鱼片包装在层上的冰片(由PAI或人工或对照生产)下(如在相关行业中通常进行的)并在0.5°C下储存27天。与其他消毒剂介质相比,PAI的应用显着抑制了鱼片微生物负荷的生长,导致生长速率降低,同时显着延缓了质量下降。使用PAI(含10mg/LH2O2)导致11天和6天的延长,即,2倍和1.5倍延伸,与用对照和人造冰处理的样品相比,分别。结果证明了PAI在延长易腐食品在储存(或/和运输)过程中的保质期方面的效率,通过验证其抗菌性能和冷却能力。
    The efficacy and applicability of Plasma Activated Ice (PAI) -produced by cold atmospheric plasma (CAP) technology- on microorganisms and quality characteristics of perishable fresh sea bream (Sparus aurata) fillets, were evaluated. The changes in microbiological load and quality characteristics of fish fillets were investigated during storage with ice from deionized water (Control), PAI and ice from artificially produced water (Artificial) of H2O2 concentrations equal to those of PAI. Fresh sea bream fillets were packed under ice flakes (produced from PAI or Artificial or Control) on layers (as typically done in the relevant industry) and stored at 0.5 °C for 27 days. PAI application inhibited significantly the growth of microbial load of the fillets resulting in reduced growth rates while simultaneously significantly retarded the quality deterioration compared to the other disinfectant media. The use of PAI (with 10 mg/L H2O2) led to a 11-day and 6-day extension, i.e., 2-fold and a ∼ 1.5-fold extension, of the fillets shelf-life compared to the samples treated with Control and Artificial ice, respectively. The results proved the efficiency of PAI in extending the shelf-life of perishable foods during storage (or/and transportation), by validating its antimicrobial properties and cooling capacity.
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  • 文章类型: Journal Article
    PDO托斯卡纳面包的保质期短,限制了其在生产区域附近市场的分销,影响其商业成功和供应链运营商的经济回报。虽然MAP在面包储存中的应用被广泛接受,这种技术是否适合延长PDO托斯卡纳面包的保质期仍有待探索。此外,据我们所知,文献中没有关于在纯大气中或与CO2结合使用氩气作为填充气体的数据。在这种情况下,这项研究的目的是评估不同改性包装气氛对酸面团面包保质期的影响。将面包片分别储存在23°C的塑料袋中,在五种不同的气氛中(Ar(100%),N2(100%),CO2(100%)混合CO2/N2(70%CO2,30%N2),混合CO2/Ar(70%CO2,30%Ar),选择空气作为对照。为了选择最佳的储存条件,无论是化学物理,流变学,和感官特征进行了评估。结果表明,与空气相比,纯气体(CO2,N2,Ar)作为储存气氛表现出良好的品质。相比之下,混合CO2/N2和混合CO2/Ar在减缓老化过程方面都是最好的,从而使面包的保质期延长了一倍,与其他大气相比。总之,氩气,作为一种保存的气氛,似乎是延长PDO托斯卡纳面包保质期的最佳解决方案。
    The short shelf-life of PDO Tuscan bread limits its distribution to markets close to the production area, affecting its commercial success and the economic return by supply chain operators. While the application of MAP to store bread is widely accepted, the suitability of this technique to extend the shelf life of the PDO Tuscan bread is still to be explored. Furthermore, to the best of our knowledge no data are available in the literature about the use of argon as filling gas neither in pure atmosphere nor in combination with CO2. In this context, the aim of this study was to evaluate the effect of different modified packaging atmospheres on the shelf-life of sourdough bread. Slices of bread were stored individually in plastic bags at 23 °C in five different atmospheres (Ar (100%), N2 (100%), CO2 (100%), Mix CO2/N2 (70% CO2, 30% N2), Mix CO2/Ar (70% CO2, 30% Ar)), and Air was selected as a control. To select the best storage conditions, both chemical-physical, rheological, and organoleptic features were evaluated. Results showed that pure gases (CO2, N2, Ar) displayed good qualities as storage atmospheres compared to Air. In contrast, both Mix CO2/N2 and Mix CO2/Ar were the best in slowing down the staling process, thus doubling the shelf-life of bread, compared to other atmospheres. In conclusion, argon, as a preservation atmosphere, seems to be the best solution to extend the shelf-life of PDO Tuscan bread.
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