TY - JOUR

T1 - Dry matter yield, chemical composition and estimated extractable protein of legume and grass species during the spring growth

AU - Solati, Zeinab

AU - Jørgensen, Uffe

AU - Eriksen, Jørgen

AU - Søegaard, Karen

PY - 2017

Y1 - 2017

N2 - BACKGROUNDKnowledge of the variation of extractable protein amount in legumes and grasses as affected by harvest time is important for identifying optimal combinations to enable a high protein production in a biorefinery. The extractability of protein was estimated using the Cornell Net Carbohydrate and Protein System across six harvests during the spring growth.RESULTSThe estimated extractable protein [g kg−1 dry matter (DM)] defined as the easily available fractions B1+B2 was significantly higher in white clover and lucerne at all harvests while, if the more cell wall attached fraction B3 can be extracted, white clover had the highest extractable protein amongst all species. Total yield of B1+B2 per ha was higher in white clover and red clover at the early growth while B1+B2+B3 was by far the highest for red clover through all harvests.CONCLUSIONWhite clover could be a good candidate for protein production purpose in a biorefinery due to its high extractable protein content per kg DM. In order to maximise the protein production capacity, harvest should take place during early growth due to a decline in protein extractability with maturity. The final economy of the concept will depend on the value of the fibre after extraction of the protein.

AB - BACKGROUNDKnowledge of the variation of extractable protein amount in legumes and grasses as affected by harvest time is important for identifying optimal combinations to enable a high protein production in a biorefinery. The extractability of protein was estimated using the Cornell Net Carbohydrate and Protein System across six harvests during the spring growth.RESULTSThe estimated extractable protein [g kg−1 dry matter (DM)] defined as the easily available fractions B1+B2 was significantly higher in white clover and lucerne at all harvests while, if the more cell wall attached fraction B3 can be extracted, white clover had the highest extractable protein amongst all species. Total yield of B1+B2 per ha was higher in white clover and red clover at the early growth while B1+B2+B3 was by far the highest for red clover through all harvests.CONCLUSIONWhite clover could be a good candidate for protein production purpose in a biorefinery due to its high extractable protein content per kg DM. In order to maximise the protein production capacity, harvest should take place during early growth due to a decline in protein extractability with maturity. The final economy of the concept will depend on the value of the fibre after extraction of the protein.

KW - Cornell Net Carbohydrate and Protein System (CNCPS)

KW - protein fractions

KW - grassland species

KW - biorefinery

KW - feed

KW - cbio

U2 - 10.1002/jsfa.8258

DO - 10.1002/jsfa.8258

M3 - Journal article

C2 - 28188654

VL - 97

SP - 3958

EP - 3966

JO - Journal of the Science of Food and Agriculture

JF - Journal of the Science of Food and Agriculture

SN - 0022-5142

IS - 12

ER -