Investigation of Enological Techniques to Mitigate the Effects of Grapevine Red Blotch Disease on Wine Composition

Supplemental Table 1  Phenolic content of healthy Merlot grapes and Merlot grapes affected by grapevine red blotch disease (GRBD) (n = 5). CN, GRBD-asymptomatic grapes (control); RB 1, first-harvest GRBD-symptomatic grapes; RB 2, second-harvest GRBD-symptomatic grapes; NTP, non-tannin phenolics.

Supplemental Table 2  Phenolic composition of bottled Merlot wines in 2019 and 2020 (n = 6). CN, wine made from GRBD-asymptomatic grapes (control); RB 1, wine made from first-harvest GRBD-symptomatic grapes; RB 2, wine made from second-harvest GRBD-symptomatic grapes; RB 2EZ, wine made from second-harvest GRBD-symptomatic grapes with pectolytic enzyme treatment; RB 2EM, wine made from second-harvest GRBD-symptomatic grapes with extended maceration; HA, hydroxycinnamic acid; LOQ, limit of quantification.

Supplemental Table 3  Volatile profile (relative response based on 2-undecanone) of bottled Merlot wines in 2019 and 2020 (n = 6). CN, wine made from GRBD-asymptomatic grapes (control); RB 1, wine made from first-harvest GRBD-symptomatic grapes; RB 2, wine made from second-harvest GRBD-symptomatic grapes; RB 2EZ, wine made from second-harvest GRBD-symptomatic grapes with pectolytic enzyme treatment; RB 2EM, wine made from second-harvest GRBD-symptomatic grapes with extended maceration.

Supplemental Table 4  Sensory attributes of bottled Merlot wines in 2019 (n = 3). CN, wine made from GRBD-asymptomatic grapes (control); RB 1, wine made from first-harvest GRBD-symptomatic grapes; RB 2, wine made from second-harvest GRBD-symptomatic grapes; RB 2EZ, wine made from second-harvest GRBD-symptomatic grapes with pectolytic enzyme treatment; RB 2EM, wine made from second-harvest GRBD-symptomatic grapes with extended maceration.

Supplemental Table 5  Sensory attributes of bottled Merlot wines in 2020 (n = 3). CN, wine made from GRBD-asymptomatic grapes (control); RB 1, wine made from first-harvest GRBD-symptomatic grapes; RB 2, wine made from second-harvest GRBD-symptomatic grapes; RB 2EZ, wine made from second-harvest GRBD-symptomatic grapes with pectolytic enzyme treatment; RB 2EM, wine made from second-harvest GRBD-symptomatic grapes with extended maceration.

• 23-047_SupplementalData.pdf