Publication detail

Biological valorization strategy for converting spent coffee grounds into biopolymers and chemicals

KOVALČÍK, A. KUČERA, D. OBRUČA, S. HUDEČKOVÁ, H. MÁROVÁ, I.

Original Title

Type

abstract

Language

English

Original Abstract

Coffee is the second largest traded commodity in the world. More than 6 million tons of spent coffee grounds (SCG) per year are generating worldwide as a solid residue after beverage preparation or instant coffee production [1]. In the time when we should save carbon sources and use the carbon only we have to, SCG belong to valuable renewable sources of carbon. This work suggests a biological valorization strategy for converting of SCG into polyhydroxyalkanoates (PHA), lactic acid, carotenoids, antioxidants, antimicrobial agents, and filler for polymers [2 - 4]. For the suggested approach, the fractionation of SCG is a crucial step. For the biotechnological production of PHA, oil derived from SCG after extraction with n-hexane as well as fermentable sugar derived from SCG through hydrolysis have been used. SCG hydrolysates have been detoxified through an adsorption strategy by using Amberlite XAD4. Amberlite XAD4 is a non-ionic crosslinked polymer, which adsorptive properties are connected with its macroreticular structure, high surface area and the aromatic nature of its surface. XAD4 have a capacity for the adsorption of organic substances from aqueous systems. The compounds trapped on Amberlite XAD4 showed high antioxidative and antimicrobial activity and can be used as bioactive compounds with the use in pharmacy, food and polymer industry. The rest solid material after neutralization and composting can be used as fertilizer or after modification as filler for polymers. In conclusion, it can be said that nowadays, when many concerns about consequences of depletion of natural resources and the rapid changing of the climate have arisen, the broad availability of SCG should be accepted and utilized wisely as “value-added product” [5].

Keywords

Biopolymers, waste material, antioxidants, antibacterial agents, valorization

Authors

KOVALČÍK, A.; KUČERA, D.; OBRUČA, S.; HUDEČKOVÁ, H.; MÁROVÁ, I.

Released

12. 9. 2018

ISBN

978-80-214-5488-0

Book

7th meeting on Chemistry & Life 2018, September 12-14 2018

Edition number

První

Pages from

Pages to

Pages count

BibTex

@misc{BUT150181,
  author="Adriána {Kovalčík} and Dan {Kučera} and Stanislav {Obruča} and Helena {Hudečková} and Ivana {Márová}",
  title="Biological valorization strategy for converting spent coffee grounds
into biopolymers and chemicals",
  booktitle="7th meeting on Chemistry & Life 2018, September 12-14 2018",
  year="2018",
  edition="První",
  pages="26--26",
  isbn="978-80-214-5488-0",
  note="abstract"
}