Effects of spray drying process parameters on the physical properties and digestibility of the microencapsulated product from <i>Moringa stenopetala</i> leaves extract

Dadi, Debebe Worku; Emire, Shimelis Admassu; Hagos, Asfaw Debella; Eun, Jong‐Bang

doi:10.1080/23311932.2019.1690316

Cited by 13 publications

(12 citation statements)

References 20 publications

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“…According to the HR values, beetroot powders with good or excellent flowability are only observed for industrial drying-scale-sized dryers (SI, LI), while according to the AR index, the already-tested semi-technical scale (ST) achieves good beetroot powder flowability. Similar differences in the powder flowability estimation using the loose and tapped bulk density method (HR) and the angle of repose method (AR) have been obtained by other authors: Kapoor et al [32], Sarabandi et al [36], and Dadi et al [37] for spray-dried beetroot, apple, and moringa juices, respectively. Analyzing the obtained values of the flowability indices of spray-dried beetroot powders by other authors, Kapoor et al [32] obtained beetroot powders with better flowability (HR = 1.25, AR = 33.83) at the laboratory scale with similar drying parameters.…”

Section: Bulk Density Angle Of Repose and Flowabilitysupporting

confidence: 75%

Effect of Spray Dryer Scale Size on the Properties of Dried Beetroot Juice

Gawałek

2021

Molecules

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Experiments detailing the spray drying of fruit and vegetable juices are necessary at the experimental scale in order to determine the optimum drying conditions and to select the most appropriate carriers and solution formulations for drying on the industrial scale. In this study, the spray-drying process of beetroot juice concentrate on a maltodextrin carrier was analyzed at different dryer scales: mini-laboratory (ML), semi-technical (ST), small industrial (SI), and large industrial (LI). Selected physicochemical properties of the beetroot powders that were obtained (size and microstructure of the powder particles, loose and tapped bulk density, powder flowability, moisture, water activity, violet betalain, and polyphenol content) and their drying efficiencies were determined. Spray drying with the same process parameters but at a larger scale makes it possible to obtain beetroot powders with a larger particle size, better flowability, a color that is more shifted towards red and blue, and a higher retention of violet betalain pigments and polyphenols. As the size of the spray dryer increases, the efficiency of the process expressed in powder yield also increases. To obtain a drying efficiency >90% on an industrial scale, process conditions should be selected to obtain an efficiency of a min. of 50% at the laboratory scale or 80% at the semi-technical scale. Designing the industrial process for spray dryers with a centrifugal atomization system is definitely more effective at the semi-technical scale with the same atomization system than it is at laboratory scale with a two-fluid nozzle.

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Section: Bulk Density Angle Of Repose and Flowabilitysupporting

confidence: 75%

Effect of Spray Dryer Scale Size on the Properties of Dried Beetroot Juice

Gawałek

2021

Molecules

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“…Thus, the flow properties were significantly affected by the conditions of the drying process of the ES from Spondias mombin leaves, the effects resulting from the influence of the parameters alone as well as interactions between them. Similarly, the spray drying of Moringa stenopetala leaves extracts was strongly influenced by the drying conditions; however, the powders obtained showed poor flow properties, although there was an improvement in the CI and angle of response with an increase in the drying temperature (Dadi et al, 2019). This demonstrates how important it is to analyze the spray drying condition regarding flowability for each raw material, considering the complex matrices and complex spray drying condition.…”

Section: Characterization Of Sde-csd-smmentioning

confidence: 89%

“…The results obtained with the optimization of the drying process by Box-Behnken generally result in different values for the responses, depending on the levels assumed by the variables, as well as, on the characteristic of the product to be dried. In this way, the technological parameters such as HR, CI, and angle repose of Spondias mombin can be considered great according to the results of the optimization of the drying of other plant extracts for these parameters (Dadi et al, 2019;Thirugnanasambandham & Sivakumar, 2017). It is possible to verify that the optimization process by Box-Behnken design allowed to obtain powders with great features chemical and technological, incrementing the quality product from leaves of S. mombin in terms of stability and manufactory.…”

Section: Characterization Of Sde-csd-smmentioning

confidence: 99%

Optimization of the drying process of standardized extracts from leaves of Spondias mombin L. using Box–Behnken design and response surface methodology

Machado

Ferreira

Soares

2021

J. Food Process. Preserv.

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The extracts of Spondias mombin leaves were obtained to study the influence of drug amount and ethanol proportion on extract performance. The optimized extract was dried by spray drying, and the contributions were studied by Box-Behnken design to evaluate their influence on drying yield and product properties. The factorial data indicated the importance of both factors to the responses and the optimal conditions employing 10 g of herbal drug, and 80% ethanol was possible to recovery high amount of total polyphenols content (20.47 ± 0.08 g%), suitable dry residue (2.56 ± 0.04 g%), and great extraction efficient (8.10 ± 0.16%). Regarding the study of the drying process, the colloidal silicon dioxide provides spherical and larger particles with medium size 3.44 µm and moisture content equal to 4.15 ± 0.08% resulting in an increase in the physical characteristics of the dry products, such as yield (49.57%), CI (29.9%), and HR (1.43). Overall, the drying conditions (inlet temperature: 140°C and feed flow: 0.6 L/hr) provide lower hygroscopic powders, with yield of 44.66 ± 0.32% and moisture content 3.80 ± 0.06%. It was possible with the use of Box-Behnken design followed by response surface methodology that allowed the achievement of the optimum conditions for drying the standardized extract from leaves of S. mombin, to obtain powder beds with good flow and conservation of their phytochemicals. Practical applicationsConsidering the industrial production of vegetable inputs with antioxidant properties as an activity of high economic and social impact and conditioning the growth of this industrial segment to a vision of sustainable local development, it is essential that initiatives that promote the cultivation and processing of active vegetable inputs be encouraged as well as those that support the technological development of products with greater stability and easy handling. Spondias mombin appears as a species with high potential, as the species has a relevant participation in the rural economy through fruit production, the commercialization, and processing of its fruits.However, its leaves have bioactive compounds with important antioxidant activity, constituting a promising source for obtaining the substances involved in this activity, such as polyphenols. Thus, seeking to obtain products concentrated in polyphenols and improving the physical and chemical characteristics of this material is a promising How to cite this article: Machado JCB, Ferreira MRA, Soares LAL. Optimization of the drying process of standardized extracts from leaves of Spondias mombin L. using Box-Behnken design and response surface methodology. J Food

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“…Bulk and tapped density measurements were carried out using the method reported by Dadi et al [ 36 ]. For the bulk density determination, 5 g of the MoLP microcapsule was placed in a 25 mL measuring cylinder, the volume occupied by the microcapsules was then recorded while for tapped density, the measuring cylinder with 5 g MoLP microcapsules was tapped steadily on a laboratory tabletop, until a consistent volume was obtained.…”

Section: Methodsmentioning

confidence: 99%

Characterization of Moringa oleifera Leaf Powder Extract Encapsulated in Maltodextrin and/or Gum Arabic Coatings

George

Oyenihi

Rautenbach

et al. 2021

Foods

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The encapsulation of bioactive-rich plant extracts is an effective method of preventing their damage or loss of activity during processing and storage. Here, the techno-functional properties of microcapsules developed from Moringa oleifera leaf powder (MoLP) extract (core) with maltodextrin (MD), gum Arabic (GA), and a combination (MDGA) (coatings) were assessed. The bulk and tap density were 0.177, 0.325 and 0.297 g/mL and 0.13, 0.295 and 0.259 g/mL for GA, MD and MDGA microcapsules, respectively. Flowability properties of microcapsules indicated an intermediate flow except for GA which had a poor flow. The moisture content of the microcapsules ranged from 1.47% to 1.77% with no significant differences (p > 0.05) observed. All the microcapsules had high water solubility (86.35% for GA to 98.74% for MD and 90.51% for MDGA). Thermogravimetric analyses revealed that encapsulation enhanced the thermal stability of the core material. The X-ray diffraction analysis revealed that the microcapsules and extracts have an amorphous nature, which was validated by the surface morphology analysis that showed amorphous, irregular, and flake-like attributes except for MDGA microcapsules which had slightly spherical and agglomerated surfaces. The Fourier Transform Infra-Red spectra of the microcapsules showed the presence of C-O and O-H aromatic rings as well as amine groups. New spectra were observed at 1177, 1382 and 1411 cm−1 for MDGA, MD and GA, respectively, after encapsulation, which connotes a slight modification in the chemical structural pattern after encapsulation. Storage stability tests (28 days at 4, 25 and 40 °C) showed that the microcapsules were most stable at 4 °C and the stability differs significantly (p ≤ 0.05) with coating material type and temperature with MDGA showing better storage stability than others. Altogether, the attributes of the MDGA microcapsules were comparatively better than either MD or GA alone. The present data, therefore, demonstrate an effective encapsulation process for MoLP extract that can serve as fortificants in processed food products where MoLP may be used.

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Effects of spray drying process parameters on the physical properties and digestibility of the microencapsulated product from Moringa stenopetala leaves extract

Cited by 13 publications

References 20 publications

Effect of Spray Dryer Scale Size on the Properties of Dried Beetroot Juice

Effect of Spray Dryer Scale Size on the Properties of Dried Beetroot Juice

Optimization of the drying process of standardized extracts from leaves of Spondias mombin L. using Box–Behnken design and response surface methodology

Characterization of Moringa oleifera Leaf Powder Extract Encapsulated in Maltodextrin and/or Gum Arabic Coatings

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