Carotenoid processing with supercritical fluids

Mattea, Facundo; Martín, Ángel; Cocero, Marı́a José

doi:10.1016/j.jfoodeng.2009.01.030

Cited by 109 publications

(55 citation statements)

References 45 publications

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“…1) First, a complex study of the precipitation of many solutes, including carotenoids, from supercritical fluids by rapid expansion (RESS process) was done in order to avoid thermal decomposition that generally occurs by milling process [61]; 2) After that, carotenoid precipitation from liquid solvents, with dissolution by high-pressure or supercritical CO 2 as an antisolvent to create supersaturation (GAS or SAS processes, respectively) was evaluated as a crystallization process [62]; 3) In this part, the co-precipitation of many solutes such as carotenoids and coating materials towards protect and stabilize them was extensively studied [63,64]; 4) Finally, carotenoid encapsulation by RESS, GAS and SAS techniques have been better studied (being in some cases also successfully scaled up) and other techniques such as the novel Solution Enhanced Dispersion by Supercritical (SEDS) fluids, based on the principle of SAS, has been applied (Table 3) [64][65][66][67].…”

Section: Encapsulation Of Carotenoid Pigments Using Supercritical Fluidsmentioning

confidence: 99%

Carotenoid Pigments Encapsulation: Fundamentals, Techniques and Recent Trends

Santos¹,

Meireles²

2010

TOCENGJ

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Supercritical fluids have become an attractive alternative due to environmentally friendly solvents. The methods that use supercritical fluids can be conveniently used for various applications such as extraction, reactions, particle formation and encapsulation. For encapsulation purposes, the processing conditions given by supercritical technology have important advantages over other methods that include harsh treatments with regard to pH, temperature, light, the use of organic solvents, etc. Unstable functional pigments such as carotenoids extracted from natural sources have been encapsulated to overcome instability problem. Thus, the most used techniques applicable to this intention are described and discussed in this review as well the recent advances and recent trends in this topic that involves the use of supercritical fluids.

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Section: Encapsulation Of Carotenoid Pigments Using Supercritical Fluidsmentioning

confidence: 99%

Carotenoid Pigments Encapsulation: Fundamentals, Techniques and Recent Trends

Santos¹,

Meireles²

2010

TOCENGJ

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“…As widely reported in the literature [26][27][28][29], SFE is based on the solvating properties of SF. In particular, the extraction by SF depends on a tuneable nature of SF like temperature, pressure and some extrinsic features like the characteristics of the sample matrix, interactions with targeted analysts, and many environmental factors [43,44].…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…In particular, many authors have studied the dependence of the solubility of different carotenoids in supercritical CO 2 with temperature and pressure [26,27]. Most of the solubility data of these works were correlated using the semi-empirical Chrastil's model [28], which provides a proportional relationship between the solubility and density of CO 2 [27]. Furthermore, the majority of the SFE studies for the recovery of carotenoids have focused on tomato products and industrial tomato by-products, as they constitute a good source of lycopene, and, to a lower extent, of β-carotene [4].…”

Section: Introductionmentioning

confidence: 99%

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A Simplified Method to Estimate Sc-CO2 Extraction of Bioactive Compounds from Different Matrices: Chili Pepper vs. Tomato By-Products

et al. 2017

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Abstract:In the last few decades, the search for bioactive compounds or "target molecules" from natural sources or their by-products has become the most important application of the supercritical fluid extraction (SFE) process. In this context, the present research had two main objectives: (i) to verify the effectiveness of a two-step SFE process (namely, a preliminary Sc-CO 2 extraction of carotenoids followed by the recovery of polyphenols by ethanol coupled with Sc-CO 2 ) in order to obtain bioactive extracts from two widespread different matrices (chili pepper and tomato by-products), and (ii) to test the validity of the mathematical model proposed to describe the kinetics of SFE of carotenoids from different matrices, the knowledge of which is required also for the definition of the role played in the extraction process by the characteristics of the sample matrix. On the basis of the results obtained, it was possible to introduce a simplified kinetic model that was able to describe the time evolution of the extraction of bioactive compounds (mainly carotenoids and phenols) from different substrates. In particular, while both chili pepper and tomato were confirmed to be good sources of bioactive antioxidant compounds, the extraction process from chili pepper was faster than from tomato under identical operating conditions.

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“…It has been observed that the stability of carotenoid extracts obtained with hexane/acetone or hexane/ethanol was higher than that of extracts obtained with other organic solvents, such as chloroform, methanol or dichloromethane [14]. Also, supercritical fluids are appropriate for the extraction of compounds that can simply become degraded by light, oxygen and high temperatures like carotenoids, however the solubility of these substances is still somewhat low compared to their solubility in organic solvents, and high pressures must be used to obtain practical extraction yields [15].Therefore, solvent extraction method has been always the primary option as far as industrial point is concerned due to its simplicity and low costs.…”

Section: Introductionmentioning

confidence: 99%