Renewable sourced biodegradable mulches and their environment impact

Yang, Yan; Li, Puwang; Jiao, Jing; Yang, Ziming; Lv, Mingzhe; Li, Yongzhen; Zhou, Chuang; Wang, Chao; He, Zhiyuan; Liu, Yunhao; Song, Shuhui

doi:10.1016/j.scienta.2020.109375

Cited by 54 publications

(32 citation statements)

References 114 publications

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“…Current criticism in the public and media targets the excessive use of plastic in the fruit supply chain [4,[17][18][19][20]. The present study has shown that the use of plastics for fruit colouration could be decreased in three ways.…”

Section: Sustainable Apple Colouration-economic and Ecological Aspectsmentioning

confidence: 69%

“…The sustainability aspect is judged here on the basis of a sufficient red colour of the apples, which determines their sales price and orchard (bio-)economy. Short-lived biodegradable plastic mulches [4] are not suitable for this purpose, if fossil-fuel based. The use of aluminium foil made of 80-100% recycled aluminium is associated with considerably lower CO 2 emissions than new aluminium, with its high energy demand.…”

Section: Discussionmentioning

confidence: 99%

“…Criticism concerning food and fruit production at all stages of the supply chain includes unnecessary waste from the field to wholesale, retail, restaurants and the consumer [1][2][3][4]. The excessive use of plastic is criticised due to its fossil-fuel based, non-renewable nature, which can constitute a major source of GHG emissions due to production, pollution, waste and possibly micro plastics as important aspects for a sustainable, environment-friendly horticulture.…”

Section: Introductionmentioning

confidence: 99%

“…In other words, the stimulation of the anthocyanin synthesis [8][9][10] for sustainable cultivation of these fruit crops. Apple was chosen here due to its widespread cultivation in many countries with temperate climate zones throughout the world [4]. With ca.…”

Section: Introductionmentioning

confidence: 99%

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Innovative Strategies for the Use of Reflective Foils for Fruit Colouration to Reduce Plastic Use in Orchards

2020

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(1) Background: Plastic in fruit orchards represents an environmental issue due to large CO2eq emissions associated with its production from fossil fuel and disposal (often incineration). (2) Materials and methods: Apple cv. “Braeburn Hillwell” trees on M9 rootstocks under a hail net were used at Campus Klein-Altendorf (CKA), Germany (50 °N) in 2018. In order to reduce the use of plastics to improve the red colouration of fruit particularly under hail nets, three alternatives to the current use of reflective mulch in each alleyway between the tree rows were explored, with uncovered grass alleyways as control. About 2800 colour measurements were done in the four weeks prior to harvest on 720 attached fruit below and above 1 m height in the field, and ca. 6900 additional colour measurements were conducted at harvest. (3) Results: The underlying regulatory mechanisms contrasted between the diffusive reflection of the white woven ground cover (such as LumilysTM or ExtendayTM) in the alleyways and aluminium foil under the trees with regular (straight) light reflection. Good fruit colouring and a plastic reduction were achieved (a) through spreading the white woven ground cover in every other row, and (b) through substituting the white ground cover with aluminium foil (80% recycled). Both methods can reduce greenhouse gas (GHG) emissions (75–110 kg CO2eq/ha for the first option a). (4) Conclusion: Plastic use in fruit orchards can be reduced by multiple use of the material in the same or several years, spreading it in every other row or substituting it by another reflective material, a relevant step towards an environment-friendly sustainable horticulture.

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Section: Sustainable Apple Colouration-economic and Ecological Aspectsmentioning

confidence: 69%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Innovative Strategies for the Use of Reflective Foils for Fruit Colouration to Reduce Plastic Use in Orchards

2020

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“…1,2 Os filmes biodegradáveis são formados a partir de biopolímeros, como proteínas (caseína, zeína, glúten e colágeno), polissacarídeos e seus derivados (amido, celulose, quitosana, alginatos, pectinas e gomas). [3][4][5] Dentre a grande variedade de biopolímeros existentes, o escolhido foi o amido de milho, por ser um polissacarídeo de fácil obtenção e baixo custo. 2 O amido de milho é armazenado sob a forma de grânulos que apresentam adequado grau de organização molecular, o que confere ao material um caráter parcialmente cristalino, com um grau de cristalinidade variando de 20 a 45%.…”

Section: Introductionunclassified

Study of Antimicrobial Property of Spices in Starch Films: An Experimental Proposal

Maciel¹,

Rodrigues²,

Freitas³

et al. 2020

Rev. Virtual Quim.

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The proposed experiment studies the antimicrobial properties of spices, cloves and cinnamon. Materials of easy access and low cost were used, aiming that the experimental procedure can be applied in laboratory classes of undergraduate courses. In this context, corn starch films were produced with infusions of spices. To facilitate the handling of the film, a plasticizer, glycerol, was added. The films were prepared from solutions and dried at room temperature. The visual analysis, documented by photos, was performed daily for 7 days. The visual comparison of the films was performed with the control (without spices), cloves and cinnamon within the expiration date, and with the same expired spices. The total duration of the experiment was one week, with the preparation of the films made in the first class, followed by the daily monitoring of the samples and the closing of the experiment in the next week's class. It was possible to observe the gradual growth of microorganisms in the control films and those prepared with extracts of cloves and cinnamon out of date. While for films prepared with cloves and cinnamon within the current validity period, microbial formations were not observed.

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