Chemical composition and bioactive properties of byproducts from two different kiwi varieties

Dias, Murilo; Caleja, Cristina; Pereira, Carla; Calhelha, Ricardo C.; Kostić, Marina; Soković, Marina; Tavares, Débora de Queiroz; Baraldi, Ilton José; Barros, Lillian; Ferreira, Isabel C.F.R.

doi:10.1016/j.foodres.2019.108753

Cited by 52 publications

(26 citation statements)

References 41 publications

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“…Therefore, both organic residues were effective for the enzymes production, which could be related to their chemical composition. Kiwi peels contain 53.73% of carbohydrates, 3.84% of protein, 6.93% of soluble and 18.92% of insoluble dietary fibres (Soquetta et al 2016), 25.26% of lignin (Gençer 2015), free sugars and fatty acids (Dias et al 2020), besides higher mineral content than their respective edible parts (Soquetta et al 2016). Peanut shells are rich in many functional compounds as cellulose, hemicellulose and lignin (Duc et al 2019), in which lignin can represent up to 41.3% of the lignocellulose, being this value 2 to 4 times higher than for most common agricultural residues, such as rice straw, wheat straw, sugarcane bagasse and corn cob/stover (Anike et al 2016).…”

Section: Resultsmentioning

confidence: 99%

Ligninolytic enzymes production during polycyclic aromatic hydrocarbons degradation: effect of soil pH, soil amendments and fungal co-cultivation

2021

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Soil microorganisms play an important role in the degradation of PAHs and use various metabolic pathways for this process. The effect of soil pH, different soil amendments and the co-cultivation of fungi on the degradation of PAHs in soil and on the activity of ligninolytic enzymes was evaluated. For that purpose, three fungi were studied: Trichoderma viride, Penicillium chrysogenum and Agrocybe aegerita. Biodegradation assays with a mixture of 200 ppm PAHs (fluorene, pyrene, chrysene, and benzo[a]pyrene-50 ppm each) were set up at room temperature for 8 weeks. The maximum laccase activity by solid state fermentation-SSF (7.43 U/g) was obtained by A. aegerita on kiwi peels with 2 weeks and the highest manganese peroxidase activity (7.21 U/g) was reached in 4 weeks, both at pH 7. Fluorene, pyrene, and benzo[a]pyrene achieved higher degradation rates in soil at pH 5, while chrysene was more degradable at pH 7. About 85-90% of the PAHs were degraded by fungal remediation. The highest degradation of fluorene was achieved by co-cultivation of A. aegerita and P. chrysogenum, remaining 14% undegradable. Around 13% of pyrene stay undegradable by A. aegerita and T. viride and by A. aegerita and P. chrysogenum, both systems supported in kiwi peels, while 11% of chrysene remained in soil by the cocultivation of these fungi, supported by peanut shells.Regarding benzo[a]pyrene, 13% remained in soil after treatment with A. aegerita. Despite the increase in degradation of some PAHs with co-cultivation, higher enzyme production during degradation was observed when fungi were cultivated alone.

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Section: Resultsmentioning

confidence: 99%

Ligninolytic enzymes production during polycyclic aromatic hydrocarbons degradation: effect of soil pH, soil amendments and fungal co-cultivation

2021

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“…The chemical composition results of both OJ and KJ are presented in Dias et al (2020) and Richardson, Ansell, and Drummond (2018). Results also indicated a higher content of ascorbic acid in KJ (80 mg/100 g) than that of OJ (44 mg/100 g).…”

Section: Proximate Chemical Composition Of Oj and Kjmentioning

confidence: 98%

Effects of kiwi’s pectin methylesterase inhibitor, nanomilling and pasteurization on orange juice quality

Bazaraa

Ammar

Aqlan

2020

Food Science & Nutrition

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Citrus is considered the most consumed fruits in many parts of the world especially orange, and the world production of orange in 2018 was estimated to be 75.4 million tons, while in Egypt was estimated to be 3.24 million tons (FAO, 2020). Orange fruits (Balady cultivar, Citrus aurantium) are very important nutritional, industrial, and commercial crop in Egypt (Khedr, 2017). Juice is the main product of orange which consumed either fresh or processed, and in both cases, the need for natural high-quality juice with minimal or no heat treatment has considerably increased (Bull et al., 2004). Natural juices are consisting of two phases: a dispersing phase (serum) and a dispersed phase (cloud) (Mei, Hao, Zhu, Gao, & Luo, 2007). The activities of both, the spoilage microorganisms and the endogenous enzymes such as pectin methylesterase (PME), will determine the quality as well as the shelf life of the orange juice (OJ). Pectin is considered to be the main component of the cell wall of plants and contributes to the rigidity and the integrity of plant tissues. PME (EC 3.1.1.11) catalysis the hydrolysis of the methyl group on C6 position of the polygalacturonic acid units of pectin resulting acidic pectin and methanol (Jolie, Duvetter, Van Loey, & Hendrickx, 2010). Therefore, endogenous plant PMEs have a great role in different plant

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“…However, up to 30 % represent peels. Those contain 10.46 % moisture, 4.02 % ash, 3.84 % protein, 2.10 % lipids, 53.73 % carbohydrates, 6.93 % soluble and 18.92 % insoluble dietary fibres (Soquetta et al, 2016), frees sugar and fatty acid (Dias et al, 2020), and the skin of fruits also contain higher mineral content than their respective edible parts (Soquetta et al, 2016). Lignin content contributes to the insoluble dietary, inducing laccase production by the fungal species.…”

Section: Laccase Screeningmentioning

confidence: 99%

Development of a packed bed reactor for the removal of aromatic hydrocarbons from soil using laccase/mediator feeding system

Vipotnik

Michelin

Tavares

2021

Microbiological Research

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Polyaromatic hydrocarbons (PAH) are persistent pollutants of great concern due to their potential toxicity, mutagenicity and carcinogenicity. A biotechnological approach to remove PAH from soil was evaluated in this work using a laccase mediator system. Initially, laccase was produced by fungal co-cultivation, using kiwi peels as substrate. The produced laccase was applied to PAH contaminated soil to evaluate its efficiency on enzymatic bioremediation. Results showed that laccase mediator system was effective in the degradation of pyrene, fluorene, chrysene and a lower extension anthracene. Mediators improved the PAH degradation and natural mediators (ferulic acid and p-coumaric acid) were as effective as the synthetic mediator ABTS. However, the process was not effective in the benzo[a]pyrene degradation, one of the most recalcitrant and toxic PAH. This low degradation rate could be related to the low activity of the laccase mediator system in an environment lacking water. To overcome this issue, a PAH contaminated soil degradation system was developed in packed bed reactor (PBR) fed with laccase/mediator. Continuous flow of laccase/mediator improved the PAH degradation, achieving 74.8 %, 71.9 %, 72.2 %, 81.8 % and 100 % degradation for fluorene, anthracene, phenanthrene, chrysene and pyrene, respectively. This system was able to degrade 96 % benzo[a]pyrene, which was 90 % higher than the degradation in batch system. Results indicated that the produced laccase as well as the fed-batch degradation system developed in PBR could be successfully applied in the degradation of soil PAH pollutants, with the advantage of achieving higher degradation rates than in simple batch, as well as being a faster and simpler process than microorganism bioremediation.

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Chemical composition and bioactive properties of byproducts from two different kiwi varieties

Cited by 52 publications

References 41 publications

Ligninolytic enzymes production during polycyclic aromatic hydrocarbons degradation: effect of soil pH, soil amendments and fungal co-cultivation

Ligninolytic enzymes production during polycyclic aromatic hydrocarbons degradation: effect of soil pH, soil amendments and fungal co-cultivation

Effects of kiwi’s pectin methylesterase inhibitor, nanomilling and pasteurization on orange juice quality

Development of a packed bed reactor for the removal of aromatic hydrocarbons from soil using laccase/mediator feeding system

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