Comparison of a Conventional Harvesting Technique in Alfalfa and Red Clover with a Leaf Stripping Technique Regarding Dry Matter Yield, Total Leaf Mass, Leaf Portion, Crude Protein and Amino Acid Contents
In this study, we compared an innovative stripping technique with a conventional whole plant harvesting technique for alfalfa and red clover to develop an approach to regional production of proteins and amino acids. While the stems were harvested separately, the leaves were fractionated by stripping...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/12/6/1408 |
| _version_ | 1797490866726633472 |
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| author | Peter Liebhardt Jan Maxa Heinz Bernhardt Karen Aulrich Stefan Thurner |
| author_facet | Peter Liebhardt Jan Maxa Heinz Bernhardt Karen Aulrich Stefan Thurner |
| author_sort | Peter Liebhardt |
| collection | DOAJ |
| description | In this study, we compared an innovative stripping technique with a conventional whole plant harvesting technique for alfalfa and red clover to develop an approach to regional production of proteins and amino acids. While the stems were harvested separately, the leaves were fractionated by stripping them from the stems using a prototype machine, which resulted in higher crude protein (CP) and amino acid yield for alfalfa (CP 26.53% of dry matter (DM), in g/kg DM, Lys 16.29, Met 4.45, Cys 3.42, Thr 12.38, Tyr 8.90) and red clover (CP 26.88% of DM, in g/kg DM, Cys 2.65, Met 4.33, Lys 16.09, Thr 12.99, Tyr 9.84). The stripped fraction contained approximately 73% and 82% of the leaf portion for alfalfa and red clover, respectively. In the conventional plant harvesting technique, the crop wilted in the field to approximately 30% of DM resulting in following CP and amino acid contents in the harvested material of alfalfa (CP 20.44% of DM, in g/kg DM, Cys 2.56, Met 3.12, Lys 11.72, Thr 8.98, Tyr 6.24) and red clover(CP 20.31% of DM, in g/kg DM, Cys 2.05, Met 2.98, Lys 11.41, Thr 9.04, Tyr 6.96). |
| first_indexed | 2024-03-10T00:39:11Z |
| format | Article |
| id | doaj.art-5a85bc46bcf549c09becd3425ed690cc |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-10T00:39:11Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-5a85bc46bcf549c09becd3425ed690cc2023-11-23T15:11:18ZengMDPI AGAgronomy2073-43952022-06-01126140810.3390/agronomy12061408Comparison of a Conventional Harvesting Technique in Alfalfa and Red Clover with a Leaf Stripping Technique Regarding Dry Matter Yield, Total Leaf Mass, Leaf Portion, Crude Protein and Amino Acid ContentsPeter Liebhardt0Jan Maxa1Heinz Bernhardt2Karen Aulrich3Stefan Thurner4Agricultural System Engineering, Technische Universität München, Dürnast 10, 85354 Freising, GermanyBavarian State Research Centre for Agriculture, Institute for Agricultural Engineering and Animal Husbandry, Voettinger Strasse 36, 85354 Freising, GermanyAgricultural System Engineering, Technische Universität München, Dürnast 10, 85354 Freising, GermanyInstitute of Organic Farming, Johann Heinrich von Thuenen Institute, Trenthorst 32, 23847 Westerau, GermanyBavarian State Research Centre for Agriculture, Institute for Agricultural Engineering and Animal Husbandry, Voettinger Strasse 36, 85354 Freising, GermanyIn this study, we compared an innovative stripping technique with a conventional whole plant harvesting technique for alfalfa and red clover to develop an approach to regional production of proteins and amino acids. While the stems were harvested separately, the leaves were fractionated by stripping them from the stems using a prototype machine, which resulted in higher crude protein (CP) and amino acid yield for alfalfa (CP 26.53% of dry matter (DM), in g/kg DM, Lys 16.29, Met 4.45, Cys 3.42, Thr 12.38, Tyr 8.90) and red clover (CP 26.88% of DM, in g/kg DM, Cys 2.65, Met 4.33, Lys 16.09, Thr 12.99, Tyr 9.84). The stripped fraction contained approximately 73% and 82% of the leaf portion for alfalfa and red clover, respectively. In the conventional plant harvesting technique, the crop wilted in the field to approximately 30% of DM resulting in following CP and amino acid contents in the harvested material of alfalfa (CP 20.44% of DM, in g/kg DM, Cys 2.56, Met 3.12, Lys 11.72, Thr 8.98, Tyr 6.24) and red clover(CP 20.31% of DM, in g/kg DM, Cys 2.05, Met 2.98, Lys 11.41, Thr 9.04, Tyr 6.96).https://www.mdpi.com/2073-4395/12/6/1408fractionationingredientsleafstem |
| spellingShingle | Peter Liebhardt Jan Maxa Heinz Bernhardt Karen Aulrich Stefan Thurner Comparison of a Conventional Harvesting Technique in Alfalfa and Red Clover with a Leaf Stripping Technique Regarding Dry Matter Yield, Total Leaf Mass, Leaf Portion, Crude Protein and Amino Acid Contents Agronomy fractionation ingredients leaf stem |
| title | Comparison of a Conventional Harvesting Technique in Alfalfa and Red Clover with a Leaf Stripping Technique Regarding Dry Matter Yield, Total Leaf Mass, Leaf Portion, Crude Protein and Amino Acid Contents |
| title_full | Comparison of a Conventional Harvesting Technique in Alfalfa and Red Clover with a Leaf Stripping Technique Regarding Dry Matter Yield, Total Leaf Mass, Leaf Portion, Crude Protein and Amino Acid Contents |
| title_fullStr | Comparison of a Conventional Harvesting Technique in Alfalfa and Red Clover with a Leaf Stripping Technique Regarding Dry Matter Yield, Total Leaf Mass, Leaf Portion, Crude Protein and Amino Acid Contents |
| title_full_unstemmed | Comparison of a Conventional Harvesting Technique in Alfalfa and Red Clover with a Leaf Stripping Technique Regarding Dry Matter Yield, Total Leaf Mass, Leaf Portion, Crude Protein and Amino Acid Contents |
| title_short | Comparison of a Conventional Harvesting Technique in Alfalfa and Red Clover with a Leaf Stripping Technique Regarding Dry Matter Yield, Total Leaf Mass, Leaf Portion, Crude Protein and Amino Acid Contents |
| title_sort | comparison of a conventional harvesting technique in alfalfa and red clover with a leaf stripping technique regarding dry matter yield total leaf mass leaf portion crude protein and amino acid contents |
| topic | fractionation ingredients leaf stem |
| url | https://www.mdpi.com/2073-4395/12/6/1408 |
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