Growth and phycocyanin synthesis in the heterotrophic microalga Galdieria sulphuraria on substrates made of food waste from restaurants and bakeries

Jenni Kathrine Sloth; Henriette Casper Jensen; Daniel Pleissner; Niels Thomas Eriksen

doi:10.1016/j.biortech.2017.04.043

Growth and phycocyanin synthesis in the heterotrophic microalga Galdieria sulphuraria on substrates made of food waste from restaurants and bakeries

Jenni Kathrine Sloth
, Henriette Casper Jensen
, Daniel Pleissner
, Niels Thomas Eriksen

Publikation: Bidrag til tidsskrift › Tidsskriftsartikel › Forskning › peer review

Abstract

Galdieria sulphuraria 074G (Rhodophyta) was grown heterotrophically in defined medium and on amylolytic and proteolytic hydrolysed food waste from restaurants and bakeries. Substrate uptake, growth, and phycocyanin content were quantified in the cultures. The alga utilised carbohydrates and amino
acids from the waste but ammonium and other inorganic nutrients were needed to stimulate phycocyanin synthesis. Highest specific phycocyanin contents (20–22 mg g1) were observed in cells grown at 25 C or 34 C on the food wastes. Growth inhibition was observed when the hydrolysates were used in quantities resulting in glucose concentrations of 10 and 50 g L1 for bakery and restaurant waste, respectively. Still, G. sulphuraria 074G grew and produced phycocyanin efficiently on food waste under adequate conditions and may potentially be utilised for synthesise of high-valuable products from food
waste.

Originalsprog	Engelsk
Tidsskrift	Bioresource Technology
Vol/bind	238
Sider (fra-til)	296-305
Antal sider	10
ISSN	0960-8524
DOI	https://doi.org/10.1016/j.biortech.2017.04.043
Status	Udgivet - 2017

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title = "Growth and phycocyanin synthesis in the heterotrophic microalga Galdieria sulphuraria on substrates made of food waste from restaurants and bakeries",

abstract = "Galdieria sulphuraria 074G (Rhodophyta) was grown heterotrophically in defined medium and on amylolytic and proteolytic hydrolysed food waste from restaurants and bakeries. Substrate uptake, growth, and phycocyanin content were quantified in the cultures. The alga utilised carbohydrates and amino acids from the waste but ammonium and other inorganic nutrients were needed to stimulate phycocyanin synthesis. Highest specific phycocyanin contents (20–22 mg g −1) were observed in cells grown at 25 °C or 34 °C on the food wastes. Growth inhibition was observed when the hydrolysates were used in quantities resulting in glucose concentrations of 10 and 50 g L −1 for bakery and restaurant waste, respectively. Still, G. sulphuraria 074G grew and produced phycocyanin efficiently on food waste under adequate conditions and may potentially be utilised for synthesise of high-valuable products from food waste. ",

keywords = "technology, engineering and IT",

author = "Sloth, \{Jenni Kathrine\} and Jensen, \{Henriette Casper\} and Daniel Pleissner and \{Thomas Eriksen\}, Niels",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2017",

doi = "10.1016/j.biortech.2017.04.043",

language = "English",

volume = "238",

pages = "296--305",

journal = "Bioresource Technology",

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TY - JOUR

T1 - Growth and phycocyanin synthesis in the heterotrophic microalga Galdieria sulphuraria on substrates made of food waste from restaurants and bakeries

AU - Sloth, Jenni Kathrine

AU - Jensen, Henriette Casper

AU - Pleissner, Daniel

AU - Thomas Eriksen, Niels

PY - 2017

Y1 - 2017

N2 - Galdieria sulphuraria 074G (Rhodophyta) was grown heterotrophically in defined medium and on amylolytic and proteolytic hydrolysed food waste from restaurants and bakeries. Substrate uptake, growth, and phycocyanin content were quantified in the cultures. The alga utilised carbohydrates and amino acids from the waste but ammonium and other inorganic nutrients were needed to stimulate phycocyanin synthesis. Highest specific phycocyanin contents (20–22 mg g −1) were observed in cells grown at 25 °C or 34 °C on the food wastes. Growth inhibition was observed when the hydrolysates were used in quantities resulting in glucose concentrations of 10 and 50 g L −1 for bakery and restaurant waste, respectively. Still, G. sulphuraria 074G grew and produced phycocyanin efficiently on food waste under adequate conditions and may potentially be utilised for synthesise of high-valuable products from food waste.

AB - Galdieria sulphuraria 074G (Rhodophyta) was grown heterotrophically in defined medium and on amylolytic and proteolytic hydrolysed food waste from restaurants and bakeries. Substrate uptake, growth, and phycocyanin content were quantified in the cultures. The alga utilised carbohydrates and amino acids from the waste but ammonium and other inorganic nutrients were needed to stimulate phycocyanin synthesis. Highest specific phycocyanin contents (20–22 mg g −1) were observed in cells grown at 25 °C or 34 °C on the food wastes. Growth inhibition was observed when the hydrolysates were used in quantities resulting in glucose concentrations of 10 and 50 g L −1 for bakery and restaurant waste, respectively. Still, G. sulphuraria 074G grew and produced phycocyanin efficiently on food waste under adequate conditions and may potentially be utilised for synthesise of high-valuable products from food waste.

KW - technology, engineering and IT

UR - https://www.scopus.com/pages/publications/85018644937

U2 - 10.1016/j.biortech.2017.04.043

DO - 10.1016/j.biortech.2017.04.043

M3 - Journal article

SN - 0960-8524

VL - 238

SP - 296

EP - 305

JO - Bioresource Technology

JF - Bioresource Technology

ER -

Growth and phycocyanin synthesis in the heterotrophic microalga Galdieria sulphuraria on substrates made of food waste from restaurants and bakeries

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