Maple Syrup Grading Fundamentals: Flavor
What variables impact syrup flavor, and how to check for and avoid off-flavors.
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Maple syrup production from sap preconcentrated to ultra high °Brix by membrane technology: Composition and properties
Maple syrup is produced typically from maple sap concentrated by nanofiltration or reverse osmosis at a moderate °Brix level ranging from 6 to 16 °Brix followed by heat evaporation. Recently, new membrane processes have been developed to concentrate maple sap to ultra-high °Brix reaching up to 40 °Brix. The aim of this study is to evaluate the effect of this ultra-high concentration of sap on the composition, the properties and the cost of corresponding maple syrup. Results showed some differences in chemical composition and properties between syrups produced from low and ultra-high concentration of sap. Syrups produced from ultra-high °Brix concentrated sap had lower concentrations of potassium and polyphenols, a lighter color and distinctive flavor. This was mainly observed when no modification were applied to the heating pattern in the evaporator pans. However, syrups produced by modulation of the heating pattern in the evaporator had color, flavor and taste similar to control syrups. These results demonstrate that syrups with comparable sensory properties can be obtained from low and ultra-high concentrated sap by adjusting the heating time depending on the initial °Brix. The concentration process to ultra high °Brix allows for a concomitant reduction of the production costs and a modulation of syrup quality.
Maple Syrup Production Statistics
A compilation of all publicly-available data on syrup production.
Maple Tele-Medicine: What is Making my Syrup Taste Sick?
Most people recognize good tasting syrup and many can pick out when syrup tastes off, but occasionally there is a flavor that is not easily identified. Mark Isselhardt, UVM Extension, and Henry Mackres, retired Vermont Chief of Consumer Protection, discuss syrup flavors (and off-flavors) and sample syrup sent in advance of the session for diagnoses.
Maple: A Sap to Syrup Guide: A Manual for Career and Technical Centers of Vermont
This manual was developed primarily for use by Vermont Career and Technical Center educators and students. It can be used as a reference as students learn about aspects of sugarbush management and syrup production. Biology, chemistry, math, history, and the culture of maple syrup making can enrich the educational experience as well as provide technical skills for students interested in working in the maple industry. The overall goal of the manual is to create consistency in the sugaring techniques that are taught throughout Vermont and as a guide to prepare students for the Vermont Maple Career Development Event. This manual can also be a valuable resource for anyone interested in sugaring, from the back-yard sugar maker to a new employee joining an established maple syrup producer.
Metabolism Off-Flavor In Maple Syrup – Part I: Identification of the compound responsible for metabolism off-flavor
Research on metabolism off-flavor in maple syrup at the University of Vermont Proctor Maple Research and Extension Center (PMREC) had two main objectives. The first was to identify the primary compound(s) responsible for metabolism off-flavor in maple syrup. Once the responsible compound or compounds were identified, measures to reduce or remove the off-flavor from finished maple syrup could be investigated. Thus, the second main objective was to determine whether a technique could be found that maple producers and packers might employ to effectively remediate the flavor, and thereby increase the economic value, of metabolized maple syrup.
Metabolism Off-Flavor In Maple Syrup – Part II: Remediation of metabolism off-flavor in maple syrup
The objective of this study was to examine several possible remediation techniques to determine which, if any, was most effective in reducing or removing metabolism off-flavor from maple syrup.
Microbial Contamination in Maple Syrup
Occasionally, maple syrup becomes contaminated with floating masses or surface mold. Conventional practices have been to discard obvious mold growths, re-boil and then consume the syrup. This practice may be risky, especially with the increasing number of food borne illness outbreaks with other food products and the resulting negative publicity surrounding these outbreaks.
North American Maple Syrup Producers Manual, 2nd edition
A must have for any serious producer. One of the best books out there that cover all aspects of maple. This book has chapters on History of Maple Syrup and Sugar Production, Maple Resource, Planning an Operation, Managing Maple Trees, Sap Production, Syrup Production, Syrup Filtration, Marketing and many more. With over 300 pages this book is full of wisdom.
North American Maple Syrup Producers Manual (pdf) The maple manual is out of print. It is available instead as a for-sale PDF from Ohio State University Extension. Note that a more recent edition is available on this site here.
North American Maple Syrup Producers Manual, 3rd Ed.
Since 1958 the North American Maple Syrup Producers Manual has served as a basic reference source for the production of pure maple products. This 2022 edition provides up-to-date, science-based information and recommendations relating to all aspects of the industry. The guidelines presented will help users ranging from the hobby and beginning producer level to those well-established in the industry. In addition, the information herein will benefit foresters, land managers, Extension and outreach personnel, and others aiming to provide assistance to those in the maple industry. Numerous photographs, tables, a glossary and hyperlinks to selected source materials are included.
This publication is also available in print, at www.mapleresearch.org/ordermanual.