Microwave-Assisted Alkali Pretreatment for Enhancing Pineapple Waste Saccharification

Conesa, Claudia; Seguí, Lucía; Laguarda-Miró, N.; Fito, P.

doi:10.15376/biores.11.3.6518-6531

Cited by 8 publications

(3 citation statements)

References 26 publications

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“…The final outcomes seemed to open the possibility for avoiding the sugar degradation together with the formation of inhibitory compounds, as furfural and hydroxymethylfurfural. The solid pineapple waste, separated from the liquor, was treated with microwave‐assisted in order to increase saccharification of lignocellulosic matrix (Conesa et al ., ,b).…”

Section: Current Activitymentioning

confidence: 99%

Food uses of pineapple waste and by‐products: a review

Roda

Lambri

2019

Int J of Food Sci Tech

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Waste from fruits and vegetable processing industry is produced in large quantities worldwide and it contains high levels of lignocellulose, fibre, sugar, bioactive and functional compounds. Their utilisation has become one of the main important and challengeable aspects due to the generation of large quantities of by-products including peels, seeds, leaves and unused flesh in different steps of processing chain. Many researches have validated the waste utilisation as novel, low-cost, economical and natural sources of dietary fibre, antioxidants, pectin, enzymes, organic acids, food additives, essential oils, etc. through different methods of extractions, purifications and fermentations. Though, obtaining these by-products from such a variable substrate requires an understanding of the composition of the polysaccharides and their associations within the overall substrate. Focus on the pineapple fruit, scientific and technological studies have already highlighted and confirmed the potential of better and more profitable markets for pineapple wastes. This review is first of all the collection of previous reports about valorisation of food processing waste, deepening the possibilities of pineapple waste utilisation and to promote the integral exploitation of the by-products rich in bioactive compounds, even as multifunctional food ingredients. More in detail, this review aims at identifying those processes that can be implemented even in disadvantaged areas by means of technologies that allow recovering waste directly on site, thus reducing pollution and providing ingredients/food products with high nutritional values that could be integrated into the diet.

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Section: Current Activitymentioning

confidence: 99%

Food uses of pineapple waste and by‐products: a review

Roda

Lambri

2019

Int J of Food Sci Tech

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“…Microwave irradiation pretreatment studies on different types of biomass have been reported by previous researchers [28,29]. According to Lu, et al [30], the glucose yield produced increased up to 56.2% when rape straw was pretreated using a microwave pretreatment approach.…”

Section: Effect Of Pretreatment On Enzymatic Hydrolysismentioning

confidence: 92%

Alkaline-assisted Microwave Pretreatment of Tetraselmis suecica Biomass for Fed-batch Enzymatic Hydrolysis

Kassim

Meng

Serri

2019

J. Eng. Technol. Sci.

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A two-part study on pretreatment and fed-batch enzymatic hydrolysis of pretreated Tetraselmis suecica using a high initial biomass concentration was conducted. First, the effect of different pretreatment processes, i.e. microwave (MC), dilute alkaline (AK), and microwave-alkaline assisted (MAK) pretreatment, on enzymatic hydrolysis of T. suecica biomass was evaluated. Furthermore, high initial biomass concentration enzymatic hydrolysis improvement via a fed-batch strategy was performed. Among the pretreatments tested, the MAK pretreatment produced the highest sugar concentration at 9.83 ± 0.24 mg/mL, corresponding to a conversion yield of up to 85.58% of carbohydrate content available in the pretreated biomass. The solid fraction generated after pretreatment was characterized using Fourier transform infrared (FTIR) spectroscopy. The FTIR analysis revealed a significant change in the functional hydroxyl and acetyl groups of the biomass, which is favorable for enzymatic hydrolysis. Introducing an initial microalgal biomass concentration beyond 15% (w/v) exhibited a low enzymatic hydrolysis yield. The fed-batch enzymatic hydrolysis strategy of the MAK pretreated T. suecica was further investigated by adding the substrate at different time intervals. The findings indicate that the fed-batch operation system could enhance sugar production and enzymatic hydrolysis yield one-fold.

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“…One of the advantages of agricultural waste is that its content is rich with various types of sugar such as sucrose, glucose, and fructose [6] and contained substantial amounts of organic acids (citric, maleic, ascorbic), protein, phenolic compounds, and several trace elements which are essential for bacterial growth. Agricultural waste are also available in abundance for free (saving up to RM360 per run for 50 L scale production) and merely requires few pretreatment steps to purify the substrates prior to fermentation process [7]. Despite the advantages, flexirubin yield for cultivation using agricultural wastes as the main substrates were still much lower than the one using NB medium.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Downstream Processing of Industrial Scale of Flexirubin Production Using Superpro Designer

et al. 2021

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The aim of this work is to utilize a process simulator SuperPro Designer v5.5 (Intelligent, NJ, USA) for investigation on the most optimum scenario for the recovery of flexirubin pigment that was produced from a fermentation process using Chryseobacterium artocarpi strain. Process flow sheeting was based on the production of 300 kg per annum of flexirubin. Production phase at 1000 L bioreactor (including steps for the inoculum development) and different scenarios/routes for recovery of flexirubin were considered. SuperPro designer process simulator allowed for the computation of overall operating cost and capital cost under various operating parameters. Results from simulation shows that all proposed downstream processing routes is capable of achieving a high degree of flexirubin recovery yield i.e. at least 94% (or greater). Operating cost was relatively low as the overall quantity of flexirubin was rather small. Capital cost for equipment purchasing however highly depending on the selection of unit procedures for recovery of flexirubin. Centrifugation unit accelerated the separation processes but it is costly compared to the dead-end filtration unit. The latter was found to be the bottleneck for the optimization step where high yield of flexirubin can be warranted at reduced capital cost by at least 40%.

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Microwave-Assisted Alkali Pretreatment for Enhancing Pineapple Waste Saccharification

Cited by 8 publications

References 26 publications

Food uses of pineapple waste and by‐products: a review

Food uses of pineapple waste and by‐products: a review

Alkaline-assisted Microwave Pretreatment of Tetraselmis suecica Biomass for Fed-batch Enzymatic Hydrolysis

Investigation on Downstream Processing of Industrial Scale of Flexirubin Production Using Superpro Designer

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