Alternative to Tukey test

Batista, Ben Dêivide de Oliveira; Ferreira, Daniel Furtado

doi:10.1590/1413-7054202044008020

Cited by 2 publications

(3 citation statements)

References 9 publications

(16 reference statements)

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“…It can detect smaller differences with greater accuracy compared to Tukey's test, which requires a larger sample size to establish statistical significance [25]. Besides, DMRT did not conduct pairwise comparisons for all groups, therefore reducing the number of comparisons that might lead to increased Type I error rates [26].…”

Section: Discussionmentioning

confidence: 99%

Improvement of phycocyanin stability at different temperatures using microencapsulation by whey protein isolate

Tedjakusuma,

Widyaningrum

2024

IOP Conf. Ser.: Earth Environ. Sci.

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Phycocyanin is a blue pigment in cyanobacteria known for its antioxidant activity and can be applied as a natural food colorant. However, one drawback to applying phycocyanin in food products is their high-temperature instability. In this research, we investigated the effect of encapsulation of phycocyanin using whey protein isolate (WPI) as the wall material to improve high-temperature stability. The study also assessed the physiochemical properties of microencapsulated phycocyanin. Phycocyanin was extracted from dry biomass Spirulina using a cold maceration method. Then, phycocyanin extract was encapsulated with prepared emulsions containing 0.25%, 0.50%, 0.75%, and 1.00% WPI as wall materials. The result showed all microencapsulated phycocyanin, regarding various concentrations of WPI, showed lower phycocyanin degradation at 60°C and 70°C at various heating times compared to control, suggesting higher stability. The control sample had 35.55±0.33% and 62.61±0.55% concentration degradation at 60°C and 70°C after 10 min heating. The microencapsulated phycocyanin with 0.50% WPI had 12.67±2.08% and 19.95±2.02% at 60°C and 70°C after 10 min heating. The encapsulation efficiency achieved 98-99% regarding various concentrations of WPI. There was no significant difference in solubility between the control and microencapsulated phycocyanin. Our result concluded that microencapsulation, using WPI as wall material, improved the high-temperature stability of phycocyanin.

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Section: Discussionmentioning

confidence: 99%

Improvement of phycocyanin stability at different temperatures using microencapsulation by whey protein isolate

Tedjakusuma,

Widyaningrum

2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…Tukey's HSD (highest significant difference) post‐hoc tests explored the plot differences using the HSD.test function in the agricolae package (de Mendiburu, 2012) in R (R Core Development Team, 2010). Although the plots are non‐independent, the variances are relatively equal, and Tukey's is acceptably robust (Batista & Ferreira, 2020; Rogan et al, 1977).…”

Section: Methodsmentioning

confidence: 99%

“…Although the plots are non-independent, the variances are relatively equal, and Tukey's is acceptably robust (Batista & Ferreira, 2020;Rogan et al, 1977).…”

Section: Materials S and Me Thodsmentioning

confidence: 99%

Temperature dependency of litter decomposition is not demonstrated under reciprocal transplantation of tussock leaves along an altitudinal gradient

et al. 2023

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Decomposition rates are an important component of carbon sequestration rates in soils, potentially mitigating future climate change. Here we aim to better understand decomposition's relationship with temperature in natural conditions. In snow‐tussock grassland dominated by Chionochloa rubra on Mount Tongariro, Tongariro National Park, New Zealand, we measured decomposition of Chionochloa leaf litter along an ≈ 700 m altitudinal gradient, as a space‐for‐temperature experiment, representing 4.2°C of warming. We examined decomposition rates in a full reciprocal translocation of litter bags between eight plots as both the origin of eight litter types and the eight destinations of plating out of litter bags, over 4 years using six replicates, and modelled their relationships to environmental variates. Litter decomposed progressively over time, but at the same rate along the altitudinal gradient. There was no home‐field advantage. In terms of litter quality, decomposition rates were related only to litter lignin, or fibre or litter N. Only decomposition at Year 4, and that only when organised by litter destination, showed a relationship to mean annual temperature jointly with soil C, and this was only weak and implausible. When studied across the full reciprocal transplant, there were no significant interactions between Origin and Destination data with or without Years. Therefore litter from each plot decomposed at the same rate as other plots' litter at all altitudes, allowing for small, often irregular differences in litter quality and micro‐environment. Despite the few modelled differences, decomposition rates show no plausible trends in our altitude‐for‐temperature substitution. We suggest this may be a universal finding, except perhaps under different moisture regimes. Thus, under projected climate warming scenarios, changes in temperature will not directly affect decomposition rates, and cannot influence C sequestration in nature. Read the free Plain Language Summary for this article on the Journal blog.

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Alternative to Tukey test

Cited by 2 publications

References 9 publications

Improvement of phycocyanin stability at different temperatures using microencapsulation by whey protein isolate

Improvement of phycocyanin stability at different temperatures using microencapsulation by whey protein isolate

Temperature dependency of litter decomposition is not demonstrated under reciprocal transplantation of tussock leaves along an altitudinal gradient

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