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Effect of the new high vacuum technology on the chemical composition of maple sap and syrup

Techniques used to produce maple syrup have considerably evolved over the last decades making them more efficient and economically profitable. However, these advances must respect composition and quality standards as well as authenticity of maple products. Recently, a new and improved high vacuum technology has been made available to producers to achieve higher sap yields. The aim of the present study was therefore to evaluate the effect of this new system on the yield of sap and on the sap and syrup chemical composition.

Characterization and Removal of Buddy Off-Flavor in Maple Syrup

Buddy maple syrup is characterized by an unpleasant cabbage?like flavor occurring generally toward the end of the sap harvest season. Occurrence of buddy off?flavor leads to a decrease in syrup value and economic loss for the industry. It is therefore relevant to characterize the off?flavor in order to apply corrective treatments. HS?SPME combined with GC/MS was applied to analyze volatile aroma compounds in buddy maple syrup samples. Two novel volatile sulfur compounds were found in maple syrup: dimethyl disulfide (DMDS) and dimethyl trisulfide. A 3?alternative forced choice in ascending concentration of different buddy syrups diluted in good quality syrup was conducted in triplicate to assess buddy syrup concentration thresholds leading to detection and recognition of the off?flavor by 16 panelists while monitoring volatile aroma compounds in diluted samples. Results showed that DMDS was associated with the flavor defect. The recognition threshold concentration of buddy syrup varies depending on the syrup sample and the off?flavor can be detected in syrups containing very low DMDS content. Application of a continuous heat treatment on buddy syrups for 2 hr at 104.5 ¡C led to a removal of the buddy off?flavor as well as a significant reduction in DMDS content.

Colour Classes of Maple Syrup (Canada)

Maple syrup that is graded Canada Grade A and is sent or conveyed from one province to another or exported, or that is graded Grade A and is imported, must be labelled with any applicable colour class that is set out in Volume 7 of the Canadian Grade Compendium [325, SFCR].

Understanding Buddy Off-flavour in Maple Syrup

Acquiring the ability to identify common off-flavours in maple syrup is important for producers. Detecting buddy off-flavour in fresh sap can be difficult, although much easier to taste in finished syrup. Buddy syrup can be described as an unpleasant chocolatey aroma and flavour having a lingering bad aftertaste. Buddy flavour in maple syrup is a food quality issue, not a food safety issue.

Sycamore Sap and Syrup Field Trial

This study showed that sycamore does produce a sweet sap flow that can be boiled down to roduce a syrup. That syrup had a nice taste, that some people say has a butterscotch like flavor. This is a new sap and syrup product, that will need more work to develop taping strategies that could lead to its commercial production. Likewise we need more information on the sap and syrup chemistry before we can provide guidance to potential syrup producers.

Walnut Sap Flow and Syrup Making Field Trial

A 107 tap study area was established at John DalenÕs farm in Franklin WV. At this site we carried out a series of trials to learn about walnut sap flow, and to address sap and syrup production issues as they arose. We also collaborated with walnut sap producers in Palestine and Leon WV, and with Virginia TechÕs Catawba Sustainability Center in Blacksburg VA. The analysis section of this report is based on the work done at the Dalen farm study area.

The Old Maple Diabetic Meter Isn’t Working so Well Anymore

In 2005 testing was started at the Cornell Food Venture Center to see if common diabetic meters could be used to measure invert sugar levels in maple syrup for making a variety of maple value added products where crystalizing the syrup is critical.

Maple Business Resources

Useful materials for developing a business plan for your maple operation